SORNA: A Legal Analysis of 18 U.S.C. § 2250 (Failure to Register as a Sex Offender)

SORNA: A Legal Analysis of 18 U.S.C. § 2250
November 5, 2021
(Failure to Register as a Sex Offender)
Charles Doyle
Section 2250(a) of Title 18 of the United States Code outlaws an individual’s failure to
Senior Specialist in
comply with federal Sex Offender Registration and Notification Act (SORNA)
American Public Law
requirements. SORNA demands that an individual—previously convicted of a

qualifying federal, state, or foreign sex offense—register with state, territorial, or tribal
authorities. Individuals must register in every jurisdiction in which they reside, work, or

attend school. They must also update the information whenever they move, or change their employment or
educational status. For some offenders, the obligations to register and to periodically refresh their registration
information may be subject to a term limit whose duration is based on the severity of the sex offense that triggered
the obligation to register. Section 2250 applies only under one of several jurisdictional circumstances: the
individual was previously convicted of a qualifying federal sex offense; the individual travels in interstate or
foreign commerce; or the individual enters, leaves, or resides in Indian Country. The Supreme Court in Nichols v.
United States
held that SORNA, as originally written, had limited application to sex offenders in the United States
who relocated abroad. The International Megan’s Law to Prevent Child Exploitation and Other Sexual Crimes
Through Advanced Notification of Traveling Sex Offenders [Act], P.L. 114-119, however, anticipated and
addressed the limitation identified in Nichols, by adding a new offense, Section 2250(b), that replicates the
attributes of the earlier prohibition.
Individuals charged with a violation of Section 2250 may be subject to preventive detention or to a series of pre-
trial release conditions. If convicted, they face imprisonment for not more than 10 years and/or a fine of not more
than $250,000 as well as the prospect of a post-imprisonment term of supervised release of not less than 5 years.
An offender guilty of a Section 2250 offense, who also commits a federal crime of violence, is subject to an
additional penalty of imprisonment for up to 30 years and not less than 5 years for the violent crime.
The Attorney General exercised statutory authority to make SORNA applicable to qualifying convictions
occurring prior to its enactment. The Supreme Court in United States v. Kebodeaux, 570 U.S. 387 (2013), rejected
the suggestion that Congress lacks the constitutional authority to make Section 2250 applicable, because of a prior
federal offense and intrastate noncompliance, to individuals who had served their sentence and been released from
federal supervision prior to SORNA’s enactment. The Supreme Court in Gundy v. United States, 139 S. Ct. 2116
(2019), also rejected the argument that SORNA’s grant of authority to the Attorney General constituted an
unguided delegation of legislative authority.
The lower federal appellate courts have rejected other challenges to Section 2250’s constitutional validity. Those
challenges have included arguments under the Constitution’s Ex Post Facto, Due Process, Cruel and Unusual
Punishment, Commerce, Necessary and Proper, and Spending Clauses.
Congressional Research Service


link to page 4 link to page 4 link to page 6 link to page 6 link to page 6 link to page 9 link to page 11 link to page 12 link to page 14 link to page 16 link to page 16 link to page 16 link to page 16 link to page 17 link to page 17 link to page 18 link to page 18 link to page 18 link to page 18 link to page 22 link to page 25 link to page 25 link to page 26 link to page 28 link to page 28 link to page 29 link to page 29 link to page 29 link to page 30 link to page 31 link to page 32 link to page 35 link to page 36 link to page 36 link to page 36 link to page 36 link to page 38 SORNA: A Legal Analysis of 18 U.S.C. § 2250

Contents
Introduction ..................................................................................................................................... 1
Background ..................................................................................................................................... 1
Elements .......................................................................................................................................... 3
Obligation to Register and Maintain Registration ..................................................................... 3
Registration Requirements .................................................................................................. 3
Qualifying Convictions ....................................................................................................... 6
Foreign Convictions, Juvenile Adjudications, and Consensual Sex Acts ........................... 8
Pre-SORNA Convictions .................................................................................................... 9
Expired Obligation ............................................................................................................. 11
Jurisdictional Elements ........................................................................................................... 13
Travel ................................................................................................................................ 13
Indian Country .................................................................................................................. 13
Federal Crimes .................................................................................................................. 13

Knowing Failure to Register ................................................................................................... 14
Affirmative Defense ................................................................................................................ 14
Other Attributes ....................................................................................................................... 15
Venue ................................................................................................................................ 15
Bail .................................................................................................................................... 15
Fine and Imprisonment ..................................................................................................... 15
Supervised Release ........................................................................................................... 19
Constitutional Considerations ....................................................................................................... 22
Ex Post Facto........................................................................................................................... 22
Due Process ............................................................................................................................. 23
Right to Travel......................................................................................................................... 25
Cruel and Unusual Punishment ............................................................................................... 25
Legislative Authority ............................................................................................................... 26
Tenth Amendment ............................................................................................................. 26
Standing ............................................................................................................................ 26
Spending for the General Welfare ..................................................................................... 27
Commerce Clause ............................................................................................................. 28
Necessary and Proper ........................................................................................................ 29
Separation of Powers: Non-Delegation............................................................................. 32
Attachments ................................................................................................................................... 33
18 U.S.C. § 2250 (text) ........................................................................................................... 33
Failure to register .............................................................................................................. 33
Principal State SORNA Statutes (citations) ............................................................................ 33

Contacts
Author Information ........................................................................................................................ 35

Congressional Research Service


SORNA: A Legal Analysis of 18 U.S.C. § 2250

Introduction
Federal law punishes convicted sex offenders if they fail to register or to update their registration
as the Sex Offender Registration and Notification Act (SORNA) demands.1 The basic offense
under Section 2250(a) consists of three elements: (1) a continuing obligation to report to the
authorities in any jurisdiction in which the individual resides, works, or attends school; (2) the
knowing failure to comply with registration requirements; and (3) a jurisdictional element, i.e.,
(a) an obligation to register as a consequence of a prior qualifying federal conviction or (b)(i)
travel in interstate or foreign commerce, or (ii) travel into or out of Indian Country, or (c)
residence in Indian Country.2 Violators face imprisonment for not more than 10 years. The
registration offense3 carries an additional penalty of imprisonment for not more than 30 years, but
not less than 5 years, if the offender is also guilty of a federal crime of violence.4
Federal law also punishes overseas travel coupled with a failure to register that intent.5 The
elements of this shadow or supplemental offense, Section 2250(b), are: (1) an obligation to
register; (2) a knowing failure to report an intent to travel internationally; and (3) engaging in or
attempting to engage in international travel. The affirmative defense and sentencing provisions
are the same as those that apply to the original offense.6
Background
The Adam Walsh Child Protection and Safety Act created SORNA.7 SORNA revised an earlier
nationwide sex offender registration system under the Jacob Wetterling Act. The Jacob Wetterling
Act encouraged the states to establish and maintain a registration system.8 Each of them had done
so.9 Their efforts, however, though often consistent, were hardly uniform.10
The Walsh Act preserves the basic structure of the Wetterling Act, expands upon it, and adds
greater specificity to matters that were previously left to individual state choice. The Walsh Act
contemplates a nationwide, state-based, publicly available, contemporaneously accurate, online

1 18 U.S.C. § 2250. This report is available in an abridged version, CRS Report R42691, SORNA: An Abridged Legal
Analysis of 18 U.S.C. §2250 (Failure to Register as a Sex Offender)
, without the footnotes or the attribution or citations
to authority found here.
2 Id. § 2250(a).
3 Id.
4 Id. § 2250(d). Under 18 U.S.C. § 16(a), “[t]he term ‘crime of violence’ means -- (a) an offense that has as an element
the use, attempted use, or threatened use of physical force against the person or property of another.”
5 Id. § 2250(b).
6 Id. § 2250.
7 P.L. 109-248, 120 Stat. 587 (2006), codified as amended at 34 U.S.C. §§ 20901-20932 and 18 U.S.C. §2250; see
generally
CRS Report R46863, Federal Requirements for State and Military Registered Sex Offender Management, by
Emily J. Hanson, Alan Ott, and Hibbah Kaileh.
8 42 U.S.C. §§ 14071-14073 (repealed).
9 Citations to the state statutes in effect at the time of the Walsh Act’s enactment appear in CRS Report RL33967,
Adam Walsh Child Protection and Safety Act: A Legal Analysis, by Charles Doyle, 1-2 n.8. Citations to the principal
state SORNA statutes are attached.
10 Reynolds v. United States, 565 U.S. 432, 435 (2012) (“The new federal Act reflects Congress’ awareness that pre-
Act registration law consisted of a patchwork of federal and 50 individual state registration systems.”) (here and
throughout internal citations have generally been omitted).
Congressional Research Service

1

SORNA: A Legal Analysis of 18 U.S.C. § 2250

system.11 Jurisdictions that fail to meet the Walsh Act’s threshold requirements face the prospect
of losing a portion of their federal criminal justice assistance grants.12
The Walsh Act vests the Attorney General with authority to determine the extent to which
SORNA would apply to those with qualifying convictions committed prior to enactment.13 After
enactment, the Attorney General promulgated implementing regulations that imposed the
registration requirements on those with pre-enactment convictions.14
Conscious of the legal and technical adjustments required of the states, the Walsh Act afforded
jurisdictions an extension to make the initial modifications necessary to bring their systems into
compliance.15 Thereafter, states not yet in compliance have been allowed to use the penalty
portion of their federal justice assistance funds for that purpose.16 The Justice Department

11 Office of the Attorney General, The National Guidelines for Sex Offender Registration and Notification (National
Guidelines
), 73 Fed. Reg. 38,030, 38,044-45 (July 2, 2008); see also Office of the Attorney General, Supplemental
Guidelines for Sex Offender Registration and Notification
, 76 Fed. Reg. 1630 (Jan. 11, 2011); Office of the Attorney
General, Supplemental Guidelines for Juvenile Registration under the Sex Offender Registration and Notification Act
(Juvenile Guidelines)
, 81 Fed. Reg. 50,552 (Aug. 1, 2016). The Guidelines are available at https://smart.ojp.gov/sorna/
current-law#Attorney. See generally 28 C.F.R. §§ 72.1–72.3.
12 34 U.S.C. § 20927.
13 Id. § 20913(d).
14 72 Fed. Reg. 8894-97 (Feb. 28, 2007) (interim rule); 75 Fed. Reg. 18,849-53 (Dec. 29, 2010) (final rule), 28 C.F.R.
pt. 72.
15 34 U.S.C. § 20926 (“(a) Deadline. Each jurisdiction shall implement this subchapter before the later of- (1) 3 years
after July 27, 2006; and (2) 1 year after the date on which the software described in section 20925 of this title is
available. (b) Extensions. The Attorney General may authorize up to two 1-year extensions of the deadline.”). 34
U.S.C. § 20927 (“(a) In general. For any fiscal year after the end of the period for implementation, a jurisdiction that
fails, as determined by the Attorney General, to substantially implement this subchapter shall not receive 10 percent of
the funds that would otherwise be allocated for that fiscal year to the jurisdiction under subpart 1 of part E of title I of
the Omnibus Crime Control and Safe Streets Act of 1968 (42 U.S.C. 3750 et seq.). (b) State constitutionality. (1) In
general
. When evaluating whether a jurisdiction has substantially implemented this subchapter, the Attorney General
shall consider whether the jurisdiction is unable to substantially implement this subchapter because of a demonstrated
inability to implement certain provisions that would place the jurisdiction in violation of its constitution, as determined
by a ruling of the jurisdiction’s highest court. (2) Efforts. If the circumstances arise under paragraph (1), then the
Attorney General and the jurisdiction shall make good faith efforts to accomplish substantial implementation of this
subchapter and to reconcile any conflicts between this subchapter and the jurisdiction’s constitution. In considering
whether compliance with the requirements of this subchapter would likely violate the jurisdiction’s constitution or an
interpretation thereof by the jurisdiction’s highest court, the Attorney General shall consult with the chief executive and
chief legal officer of the jurisdiction concerning the jurisdiction’s interpretation of the jurisdiction’s constitution and
rulings thereon by the jurisdiction’s highest court. (3) Alternative procedures. If the jurisdiction is unable to
substantially implement this subchapter because of a limitation imposed by the jurisdiction’s constitution, the Attorney
General may determine that the jurisdiction is in compliance with this chapter if the jurisdiction has made, or is in the
process of implementing reasonable alternative procedures or accommodations, which are consistent with the purposes
of this chapter. (4) Funding reduction. If a jurisdiction does not comply with paragraph (3), then the jurisdiction shall
be subject to a funding reduction as specified in subsection (a). (c) Reallocation. Amounts not allocated under a
program referred to in this section to a jurisdiction for failure to substantially implement this subchapter shall be
reallocated under that program to jurisdictions that have not failed to substantially implement this subchapter or may be
reallocated to a jurisdiction from which they were withheld to be used solely for the purpose of implementing this
subchapter. (d) Rule of construction. The provisions of this subchapter that are cast as directions to jurisdictions or their
officials constitute, in relation to States, only conditions required to avoid the reduction of Federal funding under this
section.”).
16 U.S. Dep’t of Justice, Office of Sex Offender Sentencing, Monitoring, Apprehending, Registering, and Tracking,
Requests for Reallocation of Byrne JAG Funding Penalty, available at https://smart.ojp.gov/sorna/substantial-
implementation (last visited Nov. 4, 2021).
Congressional Research Service

2

SORNA: A Legal Analysis of 18 U.S.C. § 2250

indicates that 18 states, 4 territories, and numerous tribes are now in substantial compliance with
the 2006 legislation.17
Elements
Section 2250(a) convictions require the government to prove that (1) the defendant had an
obligation under SORNA to register and to maintain the currency of his registration information;
(2) the defendant knowingly failed to comply; and (3) one of the section’s jurisdictional
prerequisites has been satisfied.18
Section 2250(b) convictions require the government to prove that (1) the defendant had an
obligation under SORNA to register and to maintain the currency of his registration information;
(2) the defendant knowingly failed to report an intent to travel in foreign commerce; and (3) the
defendant engaged in or attempted to engage in travel in foreign commerce.19
Obligation to Register and Maintain Registration
Registration Requirements
SORNA directs anyone previously convicted of a federal, state, local, tribal, or foreign qualifying
offense to register and to keep his registration information current for as long as SORNA requires
in each jurisdiction in which he resides or is an employee or a student.20 Initially, he must also

17 U.S. Dep’t of Justice, Office of Sex Offender Sentencing, Monitoring, Apprehending, Registering, and Tracking,
SORNA Implementation Status, https://smart.ojp.gov/sorna/sorna-implementation-status (last visited Sept. 21, 2021).
For a discussion of some difficulties associated with implementation in the states and the efforts of the Justice
Department to facilitate the process, see Jennifer N. Wang, Paying the Piper: The Cost of Compliance with the Federal
Sex Offender Registration and Notification Act,
59 N.Y. L. SCH. L. REV. 681 (2015); Lori McPherson, The Sex Offender
Registration and Notification Act (SORNA) at 10 years: History, Implementation, and the Future
, 64 DRAKE L. REV.
741 (2016); Andrew J. Harris, Kimberly R. Kras, Christopher Lobanov-Rostovsky & Qurat Ann, States’ SORNA
Implementation Journeys: Lessons Learned and Policy Implications
, 23 NEW CRIM. L. REV. 315 (2020); U.S. Gov’t
Accountability Off., GAO-13-211, Sex Offender Registration and Notification Act: Jurisdictions Face Challenges to
Implement the Act, and Stakeholders Report Positive and Negative Effects
(Feb. 2013); U.S. Gov’t Accountability Off.,
GAO-15-23, Sex Offender Registration and Notification Act: Additional Outreach and Notification of Tribes about
Offenders Who Are Released Needed
(2014).
18 18 U.S.C. § 2250(a) (“Whoever - (1) is required to register under the Sex Offender Registration and Notification Act;
(2)(A) is a sex offender as defined for the purposes of the Sex Offender Registration and Notification Act by reason of
a conviction under Federal law (including the Uniform Code of Military Justice), the law of the District of Columbia,
Indian tribal law, or the law of any territory or possession of the United States; or (B) travels in interstate or foreign
commerce, or enters or leaves, or resides in, Indian country; and (3) knowingly fails to register or update a registration
as required by the Sex Offender Registration and Notification Act; shall be fined under this title or imprisoned not more
than 10 years, or both.”).
Unless the registration requirement flows from a federal conviction or residence in Indian Country, “the statutory
sequence begins when a person becomes subject to SORNA’s registration requirements. The person must then travel in
interstate commerce and thereafter fail to register.” Carr v. United States, 560 U.S. 438, 466 (2010); see also United
States v. Gundy, 804 F.3d 140, 141 (2d Cir. 2015), aff’d, 139 S. Ct. 2116 (2019), reh’g denied, 140 S. Ct. 579 (2019);
United States v. Seward, 967 F.3d 57, 61 (1st Cir. 2020).
19 18 U.S.C. § 2250(b) (“(b) International Travel Reporting Violations.-Whoever- (1) is required to register under the
Sex Offender Registration and Notification Act (42 U.S.C. §§ 16901 et seq.) [now 34 U.S.C. §§ 20901et
seq.]; (2) knowingly fails to provide information required by the Sex Offender Registration and Notification Act
relating to intended travel in foreign commerce; and (3) engages or attempts to engage in the intended travel in foreign
commerce; shall be fined under this title, imprisoned not more than 10 years, or both.”).
20 34 U.S.C. § 20913(a) (“A sex offender shall register, and keep the registration current, in each jurisdiction where the
offender resides, where the offender is an employee, and where the offender is a student. . . .”). “The term ‘sex
Congressional Research Service

3

SORNA: A Legal Analysis of 18 U.S.C. § 2250

register in the jurisdiction where the conviction occurred if different from his residence.21
Registrants who relocate or who change their names, jobs, or schools have three business days to
appear and update their registration in at least one of the jurisdictions in which they reside, work,
or attend school.22 The courts have said that the obligation runs from the time of departure rather
than arrival; that is, from when the offender leaves his former residence, job, or school rather than
when he acquires a new residence or a new job or enrolls in a different school.23
SORNA defines broadly the terms “resides,” “student,” and “employee.”24 For example “[t]he
term ‘resides’ means, with respect to an individual, the location of the individual’s home or other
place where the individual habitually lives.”25 The Attorney General’s National Guidelines
observe that “[t]he scope of ‘habitually lives’ in this context is not self-explanatory and requires
further definition.”26 The National Guidelines supply the state, territorial, and tribal authorities
some guidance for the task. They point out that the term “habitually lives” may encompass
instances where the offender “has no home or fixed address in the jurisdiction, or no home
anywhere.”27 Moreover, they state that “[t]he specific interpretation of this element of ‘residence’
which these Guidelines adopt is that a sex offender habitually lives in the relevant sense in any
place in which … the sex offender lives in the jurisdiction for at least 30 days.”28 This 30-day
ceiling, however, “does not mean that the registration of a sex offender who enters the jurisdiction
to reside may be delayed until after he has lived in the jurisdiction for 30 days. Rather, a sex
offender who enters a jurisdiction in order to make his home or habitually live in the jurisdiction
may be required to register within three business days.”29

offender’ means an individual who was convicted of a sex offense.” Id. § 20911(1). “[T]he term ‘sex offense’ means –
a criminal offense . . . a [designated] Federal offense . . . [or] a military offense. . . .” Id. § 20911(5)(A)(1). “The term
‘criminal offense’ means a State, local, tribal, foreign, or military offense . . . or other criminal offense.” Id. §
20911(6). SORNA defines “jurisdiction” as “any of the following: (A) A State. (B) The District of Columbia. (C) The
Commonwealth of Puerto Rico. (D) Guam. (E) American Samoa. (F) The Northern Mariana Islands. (G) The United
States Virgin Islands. (H) To the extent provided and subject to the requirements of section 20929 of this title, a
federally recognized Indian tribe.” Id. § 20911(10).
21 Id. § 20913(a). This requirement to register in the state of conviction does not cover pre-SORNA offenders who were
already registered with authorities in the states in which they resided when the Attorney General made SORNA
retroactively applicable. United States v. DeJarnette, 741 F.3d 971, 975-82 (9th Cir. 2013).
22 34 U.S.C. § 20913(c) (“A sex offender shall, not later than 3 business days after each change of name, residence,
employment, or student status, appear in person in at least 1 jurisdiction involved pursuant to subsection (a) and inform
that jurisdiction of all changes in the information required for that offender in the sex offender registry. That
jurisdiction shall immediately provide that information to all other jurisdictions in which the offender is required to
register.”).
23 United States v. Murphy, 664 F.3d 798, 800-03 (10th Cir. 2011); United States v. Van Buren, 599 F.3d 170, 174-75
(2d Cir. 2010); United States v. Voice, 622 F.3d 870, 875 (8th Cir. 2010). Each of these cases involved a change of
residence rather than employment or education, but the distinction should make no difference. Whether these cases
which involve moving abroad remain good law with regard to relocating within the United States after the Supreme
Court’s Nichols decision remains to be seen. In Nichols, the Court overturned the Section 2250 conviction of a sex
offender who left Kansas for the Philippines. The Court reasoned that he could not be convicted for failure to report the
move to the jurisdiction in which he “resides” when he resided in the Philippines, a nonjurisdiction. Nichols v. United
States, 578 U.S. 104 (2016).
24 34 U.S.C. §§ 20911(11) – 20911(13).
25 Id. § 20911(13).
26 National Guidelines, 73 Fed. Reg. 38,030, 38,061 (July 2, 2008).
27 Id.
28 Id. at 38,062.
29 Id. See also United States v. Thompson, 811 F.3d 717, 729-30 (5th Cir. 2016); United States v. Alexander, 817 F.3d
1205, 1214 (10th Cir. 2016) (“The same registration requirements apply in the case at bar. If the jury finds that
Congressional Research Service

4

SORNA: A Legal Analysis of 18 U.S.C. § 2250

SORNA and the National Guidelines provide comparable general definitions and minimum
standards for the terms “employee” and “student.” An “‘employee’ includes an individual who is
self-employed or works for any other entity, whether compensated or not.”30 The National
Guidelines
here speak largely in terms of examples. For instance, they note that “a sex offender
who resides in jurisdiction A and commutes to work in jurisdiction B must register and keep the
registration current in both jurisdictions.”31 Some examples are designed to alert the state, local,
and tribal jurisdiction of challenges to be addressed. One representative illustration suggests that
with respect to interstate truck drivers:
If a sex offender has some employment-related presence in a jurisdiction, but does not have
a fixed place of employment or regularly work within the jurisdiction, line drawing
questions may arise, and jurisdictions may resolve these questions based on their own
judgments. For example, if a sex offender who is long haul trucker regularly drives through
dozens of jurisdictions in the course of his employment, it is not required [that] all such
jurisdictions must make the sex offender register based on his transient employment-related
presence, but rather may treat such cases in accordance with their own policies.32
A sex offender who is employed may not have a fixed place of employment - e.g., a long-
haul trucker whose “workplace” is roads and highways throughout the country…. Knowing
as far as possible where such a sex offender is in the course of employment serves the same
public safety purposes as the corresponding information regarding a sex offender who is
employed at the fixed location. The authority under section 114(a)(7) [requiring
registration employment information] is accordingly exercised to require that information
be obtained and included in the registry concerning the places where such a sex offender
works with whatever definiteness is possible under the circumstances, such as information
about normal travel routes … in which the sex offender works.33
The definition of the term “student” is somewhat more confined. The term means “an individual
who enrolls in or attends an educational institution, including (whether public or private) a
secondary school, trade or professional school, and institution of higher education.”34 The
National Guidelines explain that “enrollment or attendance in this context should be understood
as referring to attendance at a school in a physical sense.”35
In Nichols v. United States, the Supreme Court found that SORNA’s requirements in place at the
time did not apply when offenders relocated abroad.36 Anticipating the problem, Congress passed
the International Megan’s Law to Prevent Child Exploitation and Other Sexual Crimes Through
Advanced Notification of Traveling Sex Offenders [Act], which among other things, amends

Alexander intended to make Williams’ apartment his home or intended to ‘habitually live’ at Williams’ apartment (i.e.,
that Alexander intended to live at Williams’ apartment for thirty days or more), then it would necessarily have to find
that he violated SORNA because it is undisputed that he did not register within three business days after arriving in Las
Cruces.”). Alexander’s conviction was ultimately overturned because the jury instructions may have been confusing.
Id. at 1215.
30 34 U.S.C. § 20911(12).
31 National Guidelines, 73 Fed. Reg. at 38,062.
32 Id.
33 Id. at 38,056.
34 34 U.S.C. § 20911(11).
35 National Guidelines, 73 Fed. Reg. at 38,062.
36 Nichols v. United States, 578 U.S. 104 (2016).
Congressional Research Service

5

SORNA: A Legal Analysis of 18 U.S.C. § 2250

SORNA to compel offenders to supplement their registration statements with information relating
to their plans to travel abroad.37
Qualifying Convictions
Only those convicted of a qualifying sex offense must register. There are five classes of
qualifying offenses: (1) designated federal sex offenses; (2) specified military offenses; (3) crimes
identified as one of the “special offenses against a minor”; (4) crimes in which some sexual act or
sexual conduct is an element; and (5) attempts or conspiracies to commit any offense in one of
these other classes of qualifying offenses.38 Certain foreign convictions, juvenile adjudications,
and offenses involving consensual sexual conduct do not qualify as offenses that require
offenders to register under SORNA.39 SORNA does not provide an avenue to challenge the
validity of a qualifying domestic conviction.40
Federal Qualifying Offenses
Federal qualifying offenses “(including an offense prosecuted under section 1152 or 1153 of title
18)” consist of those “under section 1591, or chapter 109A, 110 (other than section 2257, 2257A,
or 2258), or 117, of title 18,” that is:41
 18 U.S.C. § 1591 (sex trafficking of children or by force or fraud)
 18 U.S.C. § 2241 (aggravated sexual abuse)
 18 U.S.C. § 2242 (sexual abuse)
 18 U.S.C. § 2243 (sexual abuse of ward or child)
 18 U.S.C. § 2244 (abusive sexual contact)
 18 U.S.C. § 2245 (sexual abuse resulting in death)
 18 U.S.C. § 2251 (sexual exploitation of children)
 18 U.S.C. § 2251A (selling or buying children)
 18 U.S.C. § 2252 (transporting, distributing, or selling child sexually exploitive
material)
 18 U.S.C. § 2252A (transporting or distributing child pornography)
 18 U.S.C. § 2252B (misleading Internet domain names)
 18 U.S.C. § 2252C (misleading Internet website source codes)
 18 U.S.C. § 2260 (making child sexually exploitative material overseas for
export to the U.S.)
 18 U.S.C. § 2421 (transportation for illicit sexual purposes)
 18 U.S.C. § 2422 (coercing or enticing travel for illicit sexual purposes)
 18 U.S.C. § 2423 (travel involving illicit sexual activity with a child)

37 P.L. 114-119, 130 STAT. 15 (2016), codified at 42 U.S.C. § 16914(a)(7) [now 34 U.S.C. § 20914(a)(7)].
38 34 U.S.C. § 20911(1), (5), (7).
39 Id. § 20911(1), (5).
40 United States v. Diaz, 967 F.3d 107, 109-10 (2d Cir. 2020) (“We agree that SORNA does not permit defendants to
challenge [domestic] predicate sex offense convictions. . . . Diaz’s argument that SORNA permits collateral attack
through 34 U.S.C. § 20911(5)(B) (the ‘Foreign Conviction Exception’) is unpersuasive.”).
41 34 U.S.C. § 20911(5)(A)(iii).
Congressional Research Service

6

SORNA: A Legal Analysis of 18 U.S.C. § 2250

 18 U.S.C. § 2424 (filing false statement concerning an alien for illicit sexual
purposes)
 18 U.S.C. § 2425 (interstate transmission of information about a child relating to
illicit sexual activity).
Military Qualifying Offenses
The list of military qualifying offenses in the Uniform Code of Military Justice (UCMJ) varies
according to the date of the offense. For offenses committed on or after June 28, 2012, the
inventory includes:
 UCMJ art. 120: Rape, Sexual Assault, Aggravated Sexual Contact, and Abusive
Sexual Contact
 UCMJ art. 120b: Rape, Sexual Assault, and Sexual Abuse of a Child
 UCMJ art. 120c: Pornography and Forcible Pandering
 UCMJ art. 134: General Article (Prostitution, Child Pornography)
 UCMJ art. 80: Attempt (to commit a qualifying offense)
 UCMJ art. 81: Conspiracy (to commit a qualifying offense)
 UCMJ art. 82: Solicitation (to commit a qualifying offense) 42
Specified Offenses Against a Child Under 18
Other federal, state, local, tribal, military, or foreign offenses qualify when they involve:
 An offense against a child (unless committed by a parent or guardian) involving
kidnapping.
 An offense against a child (unless committed by a parent or guardian) involving
false imprisonment.
 Solicitation to engage in sexual conduct with a child.
 Use of a child in a sexual performance.
 Solicitation to practice child prostitution.
 Video voyeurism as described in section 1801 of title 18 committed against a
child.
 Possession, production, or distribution of child pornography.
 Criminal sexual conduct involving a minor, or the use of the Internet to facilitate
or attempt such conduct.
 Any conduct that by its nature is a sex offense against a minor.43

42 U.S. Dep’t of Defense, Dep’t of Defense Instruction 1325.07, Enclosure 2, Appendix 4 (Mar. 11, 2013), Change 4,
Table 6 (Aug. 19, 2020) (offenses committed on or after June 28, 2012), available at https://www.esd.whs.mil/Portals/
54/Documents/DD/issuances/dodi/132507p.pdf?ver=2020-08-20-082115-117. Table 4 lists the covered offenses
committed before Oct. 1, 2007; Table 5 lists the covered offenses committed between Oct. 1, 2007 and June 28, 2012.
43 34 U.S.C. § 20911(7), (5)(A)(ii), (6), (14). Rather than the categorical approach, courts inquire into the
circumstances of a conviction to determine whether it constitutes a conviction for “conduct that by its nature is a sex
offense against a minor” triggering the obligation to register. See United States v. Burgee, 988 F.3d 1054, 1058 (8th
Cir. 2021); United States v. Dailey, 941 F.3d 1183, 1192-93 (9th Cir. 2019) (discussing circumstances involving a
Travel Act conviction); United States v. Price, 777 F.3d 700, 708-10 (4th Cir. 2015) (discussing circumstances
Congressional Research Service

7

SORNA: A Legal Analysis of 18 U.S.C. § 2250

Crimes with a Sex Element
In addition, any federal, state, local, military, or foreign “criminal offense that has an element
involving a sexual act or sexual contact with another” qualifies.44
Attempt or Conspiracy
Finally, any attempt or conspiracy to commit one of the other qualifying offenses also qualifies.45
Foreign Convictions, Juvenile Adjudications, and Consensual Sex Acts
Juvenile Adjudications
Beyond conviction as an adult for a qualifying offense, juvenile adjudications that involve
qualifying offenses trigger SORNA’s reporting requirements (1) if the individual was 14 years or
older at the time of the misconduct and (2) the misconduct “was comparable to or more severe
than” the federal crime of aggravated sexual abuse (as defined in 18 U.S.C. § 2241) or was an
attempt or conspiracy to engage in such misconduct.46 The federal aggravated sexual abuse
offenses include sexual acts committed by force, threat, or incapacitating the victim.47 Although
the Federal Juvenile Delinquency Act limits disclosure of federal judicial delinquency
proceedings,48 it does not excuse compliance with SORNA’s registration requirements.49

surrounding a state “assault and battery of a high and aggravated nature” conviction); United States v. Dodge, 597 F.3d
1347, 1353-56 (11th Cir. 2010) (discussing circumstances surrounding a federal “transfer of obscene material to a
child” conviction).
44 34 U.S.C. § 20911(5)(A)(i); see e.g., United States v. Vineyard, 945 F.3d 1164, 1168-69 (11th Cir. 2019). SORNA
defines neither “sexual act” nor “sexual contact.” The terms are defined elsewhere in the United States Code as
follows: 18 U.S.C. § 2246(2), (3) (“(2) the term ‘sexual act’ means - (A) contact between the penis and the vulva or the
penis and the anus, and for purposes of this subparagraph contact involving the penis occurs upon penetration, however
slight; (B) contact between the mouth and the penis, the mouth and the vulva, or the mouth and the anus; (C) the
penetration, however slight, of the anal or genital opening of another by a hand or finger or by any object, with an
intent to abuse, humiliate, harass, degrade, or arouse or gratify the sexual desire of any person; or (D) the intentional
touching, not through the clothing, of the genitalia of another person who has not attained the age of 16 years with an
intent to abuse, humiliate, harass, degrade, or arouse or gratify the sexual desire of any person . . . (3) the term ‘sexual
contact’ means the intentional touching, either directly or through the clothing, of the genitalia, anus, groin, breast,
inner thigh, or buttocks of any person with an intent to abuse, humiliate, harass, degrade, or arouse or gratify the sexual
desire of any person,”) (adopted by cross reference in 20 U.S.C. § 6777(e)(8); 20 U.S.C. § 9134(f)(7)(E); 47 U.S.C. §
254(h)(7)(H); and 47 U.S.C. § 902 note (P.L. 106-554, 114 Stat. 2763A-336 (2000)).
45 34 U.S.C. § 20911(5)(A)(v).
46 Id. § 20911(8).
47 Id. § 20911(8); 18 U.S.C. § 2241. The Guidelines note that, by virtue of 18 U.S.C. § 2246, the “sexual acts”
condemned in § 2241 “include any degree of genital or anal penetration, and any oral-genital or oral-anal contact,”
National Guidelines, 73 Fed. Reg. 38,030, 38,050 (July 2, 2008). They do not mention that, by the same token, “sexual
acts” for purposes of § 2241 also include “the intentional touching, not through the clothing, of the genitalia of another
person who has not attained the age of 16 years with an intent to abuse, humiliate, harass, degrade, or arouse or gratify
the sexual desire of any person.” 18 U.S.C. § 2246(2)(D).
48 Id. § 5038(a).
49 United States v. Under Seal, 709 F.3d 257, 261-63 (4th Cir. 2013).
Congressional Research Service

8

SORNA: A Legal Analysis of 18 U.S.C. § 2250

Consensual Sex Offenses
SORNA excludes from its registration requirements adult consensual sexual offenses.50 The
exception does not extend, however, to instances when the victim is in the custody of the
offender. The exception is available, however, when the victim was a child 13 years or older and
the offender was “not more than 4 years older than the victim.”51
Foreign Convictions
Qualifying foreign convictions consist only of those “obtained with sufficient safeguards for
fundamental fairness and due process of the accused.”52 The National Guidelines state that “[s]ex
offense convictions under the laws of any foreign country are deemed to have been obtained with
sufficient safeguards for fundamental fairness and due process if the U.S. State Department, in its
Country Reports on Human Rights Practices, has concluded that an independent judiciary
generally (or vigorously) enforced the right to a fair trial in that country during the year in which
the conviction occurred.”53 They go on to point out, however, that SORNA establishes only
minimum requirements. States and other jurisdictions remain free to require registration based on
any foreign conviction.54
Pre-SORNA Convictions
SORNA delegated to the Attorney General “the authority to specify the applicability of the
requirements of [SORNA] to sex offenders convicted before [its] enactment.”55 The Supreme
Court resolved a split among the lower federal courts when it declared in Reynolds v. United
States
that SORNA’s “registration requirements did not apply to pre-Act offenders until the
Attorney General specifies that they did apply.”56
Yet the Court left unresolved the question of when the Attorney General had specified that they
apply. This too is a matter upon which the lower federal appellate courts disagreed. The issue
involved Administrative Procedure Act (APA) compliance. The APA provides that the public
generally must be given an opportunity to comment before a regulatory proposal becomes final.57
Good cause may excuse the need to honor this “notice and comment” prerequisite.58
The Attorney General issued an Interim Rule on February 28, 2007, in which he announced that
SORNA’s requirements “apply to all sex offenders, including sex offenders convicted of the

50 34 U.S.C. § 20911(5)(C). The exception is also unavailable for convictions of sexual assault when the defendant
induces fear and consent through misrepresentation. United States v. Alexander, 802 F.3d 1134, 1140 (10th Cir. 2015).
51 34 U.S.C. § 20911(5)(C). For purposes of § 20911(5)(C), “4 years” is 48 months or 1,461 days. See United States v.
Brown, 740 F.3d 145, 149 (3d Cir. 2014) (holding that the § 16911(5)(C) [now 20911(5)(C)] exception did not apply
when the offender was 17 and the victim 13, but the offender is 52 months older, rather than 48 months older, than the
victim); see also United States v. Black, 773 F.3d 1113, 1115 (10th Cir. 2014) (holding that §16911(5)(C) exception
did not apply when the 18-year-old offender was 55 months older than the 14-year-old victim).
52 34 U.S.C. § 20911(5)(B).
53 National Guidelines, 73 Fed. Reg. at 38,050.
54 Id. at 38,051.
55 34 U.S.C. § 20913(d).
56 Reynolds v. United States, 565 U.S. 432, 435 (2012).
57 5 U.S.C. § 553.
58 Id. § 553(b), (d).
Congressional Research Service

9

SORNA: A Legal Analysis of 18 U.S.C. § 2250

offense for which registration is required prior the enactment of that Act.”59 He claimed, as good
cause to dispense with notice and comment, the need to eliminate uncertainty and “to protect the
public from sex offenders who failed to register.”60
On July 2, 2008, after a notice and comment period, the Attorney General promulgated the
National Guidelines, which cited the Interim Rule for the proposition that SORNA’s date of
enactment (July 27, 2006) marked the date upon which all sex offenders, including those whose
convictions predated SORNA, were bound by its dictates.61 On December 29, 2010, the Attorney
General promulgated a final rule, effective January 28, 2011, that declared the 2007 Interim Rule
final with respect to SORNA’s application to convictions that predate its enactment.62
Three U.S. Circuit Courts of Appeals rejected the argument that APA noncompliance invalidated
the Attorney General’s effort in the 2007 Interim Rule to bring pre-enactment convictions within
SORNA requirements.63 Four other circuits found the Attorney General had failed to meet APA
standards in 2006.64 Of these four, one found prejudicial, reversible error,65 while another found
the error harmless.66 The other pair concluded that the procedures used to promulgate the 2008
National Guidelines satisfied APA requirements,67 and that SORNA’s application to pre-
enactment convictions became effective on August 1, 2008 (i.e., 30 days after valid promulgation,
as required by the APA).68 Whichever view on APA compliance the circuits found most
convincing, they initially seemed to settle on an application date no later than August 1, 2008.69
The D.C. Circuit, however, rejected this suggestion and appeared to endorse January 28, 2011, the
effective date of the Attorney General’s December 29, 2010 final order.70

59 72 Fed. Reg. 8894, 8897 (Feb. 28, 2007), 28 C.F.R. § 72.3.
60 72 Fed. Reg. 8894, 8896 (Feb. 28, 2007), 28 C.F.R. pt.72.
61 National Guidelines, 73 Fed. Reg. at 38,046 (“Rather, SORNA’s requirements took effect, when SORNA was
enacted on July 26, 2007, and they have applied since that time to all sex offenders, including those whose convictions
predate SORNA’s enactment. See 72 Fed. Reg. 8894, 8895-96 (Feb. 28, 2007).”).
62 73 Fed. Reg. 81,849 (Dec. 28, 2010).
63 United States v. Dean, 604 F.3d 1275, 1278-82 (11th Cir. 2010) (“The Attorney General had good cause to bypass
the Administrative Procedure Act’s notice and comment requirements.”); United State v. Gould, 568 F.3d 459, 470 (4th
Cir. 2009) (“[T]he Attorney General had good cause to invoke the exception to providing the 30-day notice.”); United
States v. Dixon, 551 F.3d 578, 583 (7th Cir. 2008) (characterizing the APA argument as “frivolous”).
64 United States v. Reynolds, 710 F.3d 498, 510-14 (3d Cir. 2013); United States v. Johnson, 632 F.3d 912, 927-30 (5th
Cir. 2011) (“[W]e do not find the Attorney General’s reasons for bypassing the APA’s notice-and-comment and thirty
day provisions persuasive.”); United States v. Valverde, 628 F.3d 1159, 1164-68 (9th Cir. 2010); United States v. Cain,
583 F.3d 408, 419-24 (6th Cir. 2009).
65 Reynolds, 710 F.3d at 514-24.
66 Johnson, 632 F.3d at 933 (“Because the Attorney General’s rulemaking process addressed the same issues raised by
Johnson and because Johnson makes no showing that the outcome of the process would have been different . . . had
notice been at its meticulous best, we find it is clear that the Attorney General’s APA violations were harmless error.”).
67 Valverde, 628 F.3d at 1164; United States v. Utesch, 596 F.3d 302, 310 (6th Cir. 2010).
68 Valverde, 628 F.3d at 1169; United States v. Stevenson, 676 F.3d 557, 562-66 (6th Cir. 2012).
69 Cf., United States v. Gundy, 804 F.3d 140, 145 (2d Cir. 2016), aff’d, 139 S. Ct. 2116 (2019), reh’g denied, 140 S. Ct.
579 (2019); United States v. Brewer, 766 F.3d 884, 885 (8th Cir. 2014); United States v. Whitlow, 714 F.3d 41, 45 (1st
Cir. 2013).
70 United States v. Ross, 848 F.3d 1129, 1131-32 (D.C. Cir. 2017) (“[T]he Supreme Court has read the act not to make
its registration requirement inapplicable ‘to pre-Act offenders’ until the Attorney General so specifies. Reynolds, 136 S.
Ct. at 984. What is critical for our purposes is when the Attorney General so specified. The obvious candidate for this
specification is a rule the Attorney General issued in December, 2010 after a rule making whose APA compliance is
not contested here. But this rule took effect too late to support Ross’s conviction for failure to update his registration in
the wake of his 2009 move to Ohio. The government contends that two earlier actions suffice: an interim rule issued in
Congressional Research Service

10

SORNA: A Legal Analysis of 18 U.S.C. § 2250

Expired Obligation
Section 2250 applies only to those with an obligation to register or to periodically refresh their
registration information,71 and the duration of those obligations under SORNA vary according to
the classification of an offender’s qualifying offense of conviction.72 SORNA classifies offenders
in tiers, with Tier III reserved for offenders convicted of the most serious federal sex offenses or
their equivalents under state law.73 SORNA assigns offenders with somewhat less serious federal
sex offenses or their equivalents under state law to Tier II.74 Tier I consists of all other offenders
required to register.75
Absent a reduction for a clean record, Tier I offenders have a registration period of 15 years; Tier
II offenders have a registration period of 25 years; and Tier III offenders have a registration
period of life.76 Tier I offenders with a clean record for 10 years are eligible for a 5-year reduction
of their registration period.77 Tier II offenders have no opportunity of a clean-record reduction.78
Offenders classified as Tier III offenders by virtue of a juvenile adjudication with a clean record
for 25 years are eligible for reduction of their life-time registration period to 25 years.79

2007 and ‘guidelines’ proposed in 2007 and finalized in 2008. We find them inadequate.”); see also Gundy v. United
States, 139 S. Ct. 2116, 2122 (2019) (“Under that delegated authority, the Attorney General issued an interim rule in
February 2007, specifying that SORNA’s registration requirement apply in full to sex offenders convicted of the
offense for which registration is required prior to the enactment of the Act. The final rule, issued in December 2010,
reiterated that SORNA applies to all pre-Act offenders. That rule remains the same to this day.”).
71 18 U.S.C. § 2250(a)(1); 34 U.S.C. § 20919(a).
72 34 U.S.C. § 20915(a).
73 Id. § 20911(4) (“In this subchapter the following definitions apply: … (4) The term ‘tier III sex offender’ means a
sex offender whose offense is punishable by imprisonment for more than 1 year and- (A) is comparable to or more
severe than the following offenses, or an attempt or conspiracy to commit such an offense: (i) aggravated sexual abuse
or sexual abuse (as described in sections 2241 and 2242 of title 18); or (ii) abusive sexual contact (as described in
section 2244 of title 18) against a minor who has not attained the age of 13 years; (B) involves kidnapping of a minor
(unless committed by a parent or guardian); or (C) occurs after the offender becomes a tier II sex offender.”).
74 Id. § 20911(3) (“In this subchapter the following definitions apply: … (3) The term ‘tier II sex offender’ means a sex
offender other than a tier III sex offender whose offense is punishable by imprisonment for more than 1 year and- (A) is
comparable to or more severe than the following offenses, when committed against a minor, or an attempt or
conspiracy to commit such an offense against a minor: (i) sex trafficking (as described in section 1591 of title 18); (ii)
coercion and enticement (as described in section 2422(b) of title 18); (iii) transportation with intent to engage in
criminal sexual activity (as described in section 2423(a)) of title 18; (iv) abusive sexual contact (as described in section
2244 of title 18); (B) involves- (i) use of a minor in a sexual performance; (ii) solicitation of a minor to practice
prostitution; or (iii) production or distribution of child pornography; or (C) occurs after the offender becomes a tier I
sex offender.”).
75 Id. § 20911(2) (“In this subchapter the following definitions apply: … (2) The term ‘tier I sex offender’ means a sex
offender other than a tier II or tier III sex offender.”).
76 Id. § 20915(a) (“A sex offender shall keep the registration current for the full registration period (excluding any time
the sex offender is in custody or civilly committed) unless the offender is allowed a reduction under subsection (b). The
full registration period is- (1) 15 years, if the offender is a tier I sex offender; (2) 25 years, if the offender is a tier II sex
offender; and (3) the life of the offender, if the offender is a tier III sex offender.”).
77 Id. § 20915(b) (“(1) The full registration period shall be reduced as described in paragraph (3) for a sex offender who
maintains a clean record for the period described in paragraph (2) by- (A) not being convicted of any offense for which
imprisonment for more than 1 year may be imposed; (B) not being convicted of any sex offense; (C) successfully
completing any periods of supervised release, probation, and parole; and (D) successfully completing of an appropriate
sex offender treatment program certified by a jurisdiction or by the Attorney General. (2) In the case of- (A) a tier I sex
offender, the period during which the clean record shall be maintained is 10 years; … In the case of- (A) a tier I sex
offender, the reduction is 5 years…”).
78 Id.
79 Id. (“(2) In the case of- … (B) a tier III sex offender adjudicated delinquent for the offense which required
Congressional Research Service

11

SORNA: A Legal Analysis of 18 U.S.C. § 2250

Federal courts use a variant of the statutory footprint-matching approach known as the
“categorical approach” to determine whether an offender’s statute of conviction is the equivalent
of the federal statutes used to define the various tiers.80 If the statute of conviction sweeps more
broadly than its purported federal statutory equivalent, there is no match for purposes of Tier II or
Tier III classification.81 In any event, a Tier II sex offender’s obligation to register ordinarily
sunsets after 25 years, and a Tier I sex offender’s obligation ordinarily sunsets after either 10 or
15 years depending on a clean-record reduction.82

registration in a sex registry under this subchapter, the period during which the clean record shall be maintained is 25
years. (3) In the case of- … (B) a tier III sex offender adjudicated delinquent, the reduction is from life to that period
for which the clean record under paragraph (2) is maintained.”).
80 United States v. Montgomery, 966 F.3d 335, 338 (5th Cir. 2020) (“Our court and others determine an offender’s
SORNA tier by comparing the offense for which they were convicted with SORNA’s tier definitions using the
categorical approach.”); United States v. Walker, 931 F.3d 576, 579 (7th Cir. 2019) (“Because SORNA instructs us to
compare Walker’s offense to the ‘offenses’ described in corresponding sections of the Federal Criminal Code (18
U.S.C. § 2244 and offenses listed therein), we employ the ‘categorical approach.’”); United States v. Vineyard, 945
F.3d 1164, 1169 (11th Cir. 2019) (“The categorical approach applies to determine whether Vineyard’s Tennessee
sexual battery conviction is a qualifying sex offense under SORNA’s sexual contact provision.”).
However, at least some courts supplement the straightforward “elements” comparison. Walker, 931 F.3d at 579-80
(“SORNA, however, adds a wrinkle to the [categorical] analysis. For a sex offender to qualify to Tier II or III, SORNA
also requires that his victim have certain characteristics distinct from the elements of the referenced federal offenses –
namely, that the victim be under a specified age . . . A person is a Tier II offender only if his prior offense matches
‘abusive sexual contact as described in section 2244 of title 18)’ and was ‘committed against a minor.’ 34 U.S.C.
§ 20911(3)(A). And he is a Tier III offender only if his prior offense matches one of the same federal offenses and was
committed ‘against a minor who has not attained the age of 13 years.’ Id. § 20911(4)(A).”) (emphasis of the court); see
also
United States v. Escalante, 933 F.3d 395, 401 (5th Cir. 2019); United States v. Barry, 814 F.3d 192, 196–98 (4th
Cir. 2016); United States v. White, 782 F.3d 1118, 1135 (10th Cir. 2015); United States v. Byun, 539 F.3d 982, 991
(9th Cir. 2008).
81 Montgomery, 966 F.3d at 338 (“If the offense ‘sweeps more broadly’ than the SORNA tier definition, then the
offense cannot qualify as a predicate offense for that SORNA tier regardless of the manner in which the defendant
actually committed the crime.”); Walker, 931 F.3d at 579 (“Under the categorical approach … the court compares the
elements of the predicate offense – i.e., the facts necessary for conviction – to the elements of the relevant federal
offense. If the elements of the predicate offense are the same (or narrower) than the federal offense, there is a
categorical match. But if the elements of the state conviction sweep more broadly such that there is a ‘reasonable
probability … that the State would apply its statute to conduct that falls outside’ the definition of the federal crime, than
the prior offense is not a categorical match.”).
82 Montgomery, 966 F.3d at 337 (“Because Montgomery should have been classified as a tier I offender under SORNA,
meaning that he was not required to register in 2018, we vacate the [Section 2250] conviction.”); Walker, 931 F.3d at
582 (“Because Walker’s Colorado conviction is not a categorical match … he does not qualify for Tier II or Tier III
status …. Walker is thus a Tier I offender …. As a Tier I offender, Walker was not required to register during the
relevant period …. We therefore … VACATE Walker’s conviction and sentence [under Section 2250].”).
In Montgomery, all three panel members joined in a concurrence expressing the view that “this case illustrates yet
another troubling application of the expanded and ‘byzantine-like’ categorical approach” and noting the dissatisfaction
of other circuit judges. 966 F.3d at 330-40 & n.1 (“See also, e.g., United States v. Lewis, 720 F. App’x 111, 120 (3d
Cir. 2018) (Roth, J., concurring in the judgment) (describing the categorical approach as ‘willful blindness; …); United
States v. Davis, 875 F.3d 592, 595 (11th Cir. 2017) (observing that the categorical approach carries judges [Alice-in-
Wonderland-like] ‘down a rabbit hole … to a realm where we must close our eyes as judges … Curiouser and curiouser
it has all become[.]’); United States v. Chapman, 866 F.3d 1299, 136-38 (3d Cir. 2017) (Jordan, J., concurring)
(expressing dismay at the ‘kudzu quality of the categorical approach …’); United States v. Faust, 853 F.3d 39, 61
(Lynch, J., concurring) (observing that the categorical approach ‘can lead courts to reach counterintuitive results, and
ones which are not what Congress intended’); United States v. Doctor, 842 F.3d 306, 313-15 (4th Cir. 2016)
(Wilkerson, J., concurring) (stating that the categorical approach has caused judges to ‘swap[] factual inquires for an
endless gauntlet of abstract legal questions…’).”).
Congressional Research Service

12

SORNA: A Legal Analysis of 18 U.S.C. § 2250

Jurisdictional Elements
Section 2250(a) permits prosecution and conviction on the basis of any of three jurisdictional
elements: travel in interstate or foreign commerce; residence in, or travel to or from, Indian
Country; or a prior conviction of one of the federal qualifying offenses.
Travel
Interstate travel is the most commonly invoked of Section 2250(a)’s jurisdictional elements. It
applies to anyone who travels in interstate or foreign commerce with a prior federal or state
qualifying offense who knowingly fails to register or maintain his registration.83 Section 2250
does not “require[] that a defendant’s interstate travel not be legally compelled.”84 In the case of
foreign travel, it also applies to anyone who fails to supplement his registration with information
concerning his intent to travel abroad.85 The qualifying offense may predate SORNA’s
enactment; the travel may not.86
Indian Country
Travel to or from Indian Country, or living there, will also satisfy Section 2250(a)’s jurisdictional
requirements. “Indian Country” consists primarily of Indian reservations, lands over which the
United States enjoys state-like exclusive or concurrent legislative jurisdiction.87
Federal Crimes
Travel is only one of Section 2250(a)’s jurisdictional elements; prior conviction of a federal
qualifying offense will also suffice. An individual need only have a knowing failure to register

83 See Carr v. United States, 560 U.S. 438, 447 (2010); Reynolds v. United States, 565 U.S. 432, 434 (2012); United
States v. Wass, 954 F.3d 184, 186 (4th Cir. 2020); United States v. Lawson, 891 F.3d 407, 408 (1st Cir. 2018).
84 United States v. Lusby, 972 F.3d 1032, 1035 (9th Cir. 2020). A federal court in Nevada convicted Lusby, previously
convicted of a qualifying offense, of a violation of Section 2250. He served his sentence in a federal prison in Arizona.
At Lusby’s request, federal authorities petitioned the court to modify his conditions of supervised release to require him
to begin serving his term of supervised release at a half-way house in Nevada. The court agreed. Prison authorities in
Arizona bought him a bus ticket to Las Vegas. Once in Nevada, Lusby reported neither to the half-way house nor to his
probation officer. Nor did he also did not register as a sex offender with Nevada authorities. A federal grand jury
indicted him for violating Section 2250 because of his travel from Arizona to Nevada. The district court dismissed the
indictment on the grounds that Lusby was legally compelled to travel to Las Vegas by virtue of the condition of his
supervised release. The Ninth Circuit reversed and remanded, but highlighted that the government had agreed that a
Section 2250 prosecution would be required to show that Lusby’s travel was voluntary. Id. at 1041 n.6. The Supreme
Court side-stepped a similar issue in Gundy. Gundy petitioned for review of four questions including delegation and
“whether a defendant violates 18 U.S.C. § 2250(a), which requires interstate travel, where his only movement between
states occurs while he is in custody of the Federal Bureau of Prisons and serving a prison sentence.” The Court granted
certiorari only with respect to the delegation question. Gundy v. United States, 138 S. Ct. 1260 (2018).
85 18 U.S.C. § 2250(b) (“Whoever – (1) is required to register under the Sex Offender Registration and Notification Act
[34 U.S.C. § 20901 et seq.]; (2) knowingly fails to provide information required by the Sex Offender Registration and
Notification Act relating to intended travel in foreign commerce; and (3) engages or attempts to engage in the intended
travel in foreign commerce; shall be fined under this title, prisoned not more than 10 years, or both.”).
86 Carr, 560 U.S. at 458.
87 18 U.S.C. § 1151 (“[T]he term ‘Indian country’ . . . . means (a) all land within the limits of any Indian reservation
under the jurisdiction of the United States Government . . . , (b) all dependent Indian communities within the borders
of the United States whether within the original or subsequently acquired territory thereof, and whether within or
without the limits of a state, and (c) all Indian allotments, the Indian titles to which have not been extinguished,
including rights-of-way running through the same.”).
Congressional Research Service

13

SORNA: A Legal Analysis of 18 U.S.C. § 2250

and a prior conviction for a qualifying sex offense under federal law or the law of the District of
Columbia, the UCMJ, tribal law, or the law of a United States territory or possession.88 Federal
jurisdiction flows from the jurisdictional basis for the underlying qualifying offense.89
Knowing Failure to Register
Section 2250(a)’s third element, after the jurisdictional element and an obligation to register or
update, is a knowing failure to register or to maintain current registration information as required
by SORNA.90 The government must show that the defendant knew of his obligation and failed to
honor it. The prosecution need not show that he knew he was bound to do so by federal law
generally or by SORNA specifically.91
Affirmative Defense
SORNA insists that convicted sex offenders register with state authorities, even when state law
does not require registration.92 Prior to SORNA, more than a few state sex offender registration
laws applied only to convictions occurring subsequent to their enactment or only to a narrower
range of offenses than contemplated in the Walsh Act. As a consequence of SORNA and the
Attorney General’s determination to cover pre-SORNA convictions, states must often adjust their
registration laws to come into full compliance. Conscious of the delays and difficulties that might
attend this process, Section 2250(c) affords offenders an affirmative defense when they seek to
register with state authorities, are turned away, and remain persistent in their efforts to register:
“In a prosecution for a violation under subsection (a), it is an affirmative defense that -
(1) uncontrollable circumstances prevented the individual from complying; (2) the individual did

88 Id. § 2250(a) (“Whoever . . . (2)(A) is a sex offender . . . by reason of a conviction under Federal law . . . or (B)
travels in interstate or foreign commerce . . . .” (emphasis added)); United States v. Spivey, 956 F.3d 212, 215 n.4 (4th
Cir. 2020) (“Interstate travel is not a required element for sex offenders under Federal law ….”); United States v.
Holcombe, 883 F.3d 12, 16 (2d Cir. 2018) (“A federal sex offender, unlike a state sex offender, does not need to travel
interstate to commit a SORNA offense.”).
89 United States v. George, 625 F.3d 1124, 1130 (9th Cir. 2010); cf. United States v. Comstock, 560 U.S. 126, 149
(2010) (“[A] statute is a ‘necessary and proper’ means of exercising the federal authority that permits Congress to
create federal criminal laws, to punish their violation, to imprison violators, to provide appropriately for those
imprisoned, and to maintain the security of those who are not imprisoned but who may be affected by the federal
imprisonment of others.”).
90 18 U.S.C. § 2250(a)(3).
91 United States v. Fuller, 627 F.3d 499, 507 (2d Cir. 2010), vac’d on other grounds, 565 U.S. 118 (2012) (“[E]very
Circuit to have considered the matter has held that SORNA is a general intent crime . . . . ‘There is no language
requiring specific intent or a willful failure to register such that the defendant must know his failure to register violated
federal law.’” (quoting United States v. Gould, 568 F.3d 459, 468 (4th Cir. 2004)) (citing United States v. Shenandoah,
595 F.3d 151, 159 (3d Cir. 2010); United States v. Vasquez, 611 F.3d 325, 328-29 (7th Cir. 2010))). See also United
States v. Collins, 773 F.3d 25, 29 (4th Cir. 2014) (“[T]he government can establish a defendant’s guilty knowledge by
either of two different means. The government may show that a defendant actually was aware of a particular fact or
circumstance, or that the defendant knew of a high probability that a fact or circumstance existed and deliberately
sought to avoid confirming that suspicion. ” (internal quotations and citations omitted)); United States v. Crowder, 656
F.3d 870, 873-76 (9th Cir. 2011); United States v. Voice, 622 F.3d 870, 875-66 (8th Cir. 2010).
92 34 U.S.C. § 20913(a) (“A sex offender shall register . . . .”); Willman v. Att’y Gen. of the U.S., 972 F.3d 819, 824
(6th Cir. 2020) (“[F]ederal SORNA obligations are independent of state-law sex offender duties.” (citing in accord
United States v. Del Valle-Cruz, 785 F.3d 48, 55 (1st Cir. 2015); United States v. Pendleton, 636 F.3d 78, 86 (3d Cir.
2011); United States v. Billiot, 785 F.3d 1266, 1269 (8th Cir. 2015))); see also United States v. Stock, 685 F.3d 621,
626 (6th Cir. 2012) (“The obligation SORNA does impose—the obligation to register—is imposed on sex offenders,
not states . . . . That obligation exists whether or not a state chooses to implement SORNA’s requirements and whether
or not a state chooses to register sex offenders at all.”).
Congressional Research Service

14

SORNA: A Legal Analysis of 18 U.S.C. § 2250

not contribute to the creation of such circumstances in reckless disregard of the requirement to
comply; and (3) the individual complied as soon as such circumstances ceased to exist.”93
Other Attributes
Venue
Although some courts remain to be convinced, it seems that a Section 2250 prosecution involving
interstate travel may be brought in either the state of departure or the state of arrival.94
Bail
Federal bail laws permit the prosecution to request a pre-trial detention hearing prior to the pre-
trial release of anyone charged with a violation of Section 2250.95 The individual may only be
released prior to trial under conditions, which may include among others, that he be electronically
monitored; be subject to restrictions on his personal associations, residence, or travel; report
regularly to authorities; and be subject to a curfew.96
Fine and Imprisonment
Upon conviction, the individual may be sentenced to imprisonment for a term of not more than 10
years and/or fined not more than $250,000.97 Section 2250(d) also sets an additional penalty of
imprisonment for not more than 30 years, but not less than 5 years, for the commission of a
federal crime of violence when the offender has also violated Section 2250.98 Section 16(a)

93 18 U.S.C. § 2250(c). See also Kennedy v. Allera, 612 F.3d 261, 269 (4th Cir. 2010) (“Thus, while SORNA imposes
a duty on the sex offender to register, it nowhere imposes a requirement on the State to accept such registration. Indeed,
the criminal provisions of SORNA also recognize that a State can refuse registration in as much as they allow, as an
affirmative defense to a prosecution, the claim that ‘uncontrollable circumstances prevent the individual from
complying.’” (emphasis in the original)); United States v. Picard, 995 F.3d 1, 5 (1st Cir. 2021).
94 United States v. Seward, 967 F.3d 57, 67 (1st Cir. 2020) (holding venue proper in the district of departure “because
the nature of the offense reveals that its locus delicti encompasses the departure jurisdiction”); United States v. Spivey,
956 F.3d 212, 216-17 (4th Cir. 2020) (holding venue was proper in the district of departure and noting that “this
conclusion is bolstered by 18 U.S.C. § 3237(a) which provides that ‘for offenses begun in one district and completed in
another’ … venue may lie ‘in any district in which such offense was begun, continued, or completed’”); United States
v. Holcombe, 883 F.3d 12, 15 (2d Cir. 2018) (“[A] SORNA offense begins under Section 3237(a) in the district where
the defendant leaves ….”); United States v. Kopp, 778 F.3d 986, 988-89 (11th Cir. 2015) (citing United States v.
Lewis, 768 F.3d 1086, 1092-94 (10th Cir. 2014); United States v. Lunsford, 725 F.3d 859, 863 (8th Cir. 2013); United
States v. Leach, 639 F.3d 769, 771-72 (7th Cir. 2011)). The Eleventh Circuit was unpersuaded by the defendant’s
argument to the contrary based on an unreported district court opinion from the Southern District of Ohio, Kopp, 778
F.3d at 989. But see United States v. Haslage, 883 F.3d 331, 335-36 (7th Cir. 2017) (holding that venue for a
prosecution of a Section 2250 offense was not proper in the district of departure).
95 18 U.S.C. § 3142(f)(1)(E).
96 Id. § 3142(c)(1)(B); e.g., United States v. Doby, 928 F.3d 1199, 1201 (10th Cir. 2019) (magistrate set conditions that
included a curfew, location monitoring, monitoring computer use).
97 18 U.S.C. § 2250(a).
98 Id. § 2250(d) (“(1) In general. - An individual described in subsection (a) or (b) who commits a crime of violence
under Federal law (including the Uniform Code of Military Justice), the law of the District of Columbia, Indian tribal
law, or the law of any territory or possession of the United States shall be imprisoned for not less than 5 years and not
more than 30 years. (2) Additional punishment. - The punishment provided in paragraph (1) shall be in addition and
consecutive to the punishment provided for the violation described in subsection (a).”).
Congressional Research Service

15

SORNA: A Legal Analysis of 18 U.S.C. § 2250

defines “crime of violence” for purposes of title 18 as “[a]n offense that has as an element the use,
attempted use, or threatened use of physical force against the person or property of another.”99
Sentencing Guidelines
The Sentencing Guidelines heavily influence the sentences imposed for violations of Section
2250. A district court must begin by calculating the sentencing range recommended by the
Sentencing Guidelines.100 The court must then consider the recommendation along with the
general statutory sentencing principles.101 The defendant, as well as the prosecution, may appeal
the sentence imposed,102 which the appellate courts may overturn if it is either procedurally or
substantively unreasonable.103 A sentence is procedurally unreasonable when it is the product,
among other things, of an erroneous Guideline calculation.104 It is substantively unreasonable
when it is “[dis]proportionate to the seriousness of the circumstances of the offense [or] offender,
[or] [in]sufficient or greater than necessary to comply with the purposes of the federal sentencing
statute.”105
Sections 2A3.5 and 2A3.6 of the Sentencing Guidelines provide the initial guidelines for Section
2250 offenses.106 Section 2A3.5 applies to cases other than those under the aggravated sentencing
provisions of 18 U.S.C. § 2250(d), and sets a defendant’s base offense level according to
SORNA’s tier classifications.107 A SORNA Tier III sex offender for sentencing purposes is:

99 Section 16(b) contains an alternative definition that the Supreme Court found unconstitutionally vague in Sessions v.
Dimaya
, 138 S. Ct. 1204, 1215 (2018).
100 Gall v. United States, 552 U.S. 38, 49 (2007); United States v. Chambers, 956 F.3d 667, 672 (4th Cir. 2020); United
States v. Alcius, 952 F.3d 83, 87-88 (2d Cir. 2020).
101 Gall, 552 U.S. at 49-50 (“The Guidelines are not the only consideration …. [T]he district judge should then consider
all of the § 3553(a) factors ….”); see also United States v. Dailey, 958 F.3d 742, 746 (8th Cir. 2020); Alcius, 952 F.3d
at 87-88; United States v. Nance, 957 F.3d 204, 212 (4th Cir. 2020); United States v. Díaz-Rivera, 957 F.3d 20, 25 (1st
Cir. 2020). The § 3553(a) factors include things like “(1) the nature and circumstances of the offense and the history
and characteristics of the defendant; (2) the need for the sentence imposed – (A) to reflect the seriousness of the
offense, to promote respect for the law, and to provide just punishment for the offense ….” 18 U.S.C. § 3553(a)(1),
(2)(A).
102 18 U.S.C. § 3742.
103 Gall, 552 U.S. at 51; see also United States v. Trailer, 827 F.3d 933, 936 (11th Cir. 2016); United States v. James,
792 F.3d 962, 967 (8th Cir. 2015).
104 Gall, 552 U.S. at 51; see also Dailey, 958 F.3d at 746; United States v. Benton, 957 F.3d 696, 700 (6th Cir. 2020);
United States v. Douglas, 957 F.3d 602, 606 (5th Cir. 2020).
105 United States v. Alsante, 812 F.3d 544, 551 (6th Cir. 2016); see also United States v. Haverkamp, 958 F.3d 145, 148
(2d Cir. 2020) (“A sentence is substantively unreasonable if it cannot be located within the range of permissible
decisions, shocks the conscience, or constitutes a manifest injustice.”); Nance, 957 F.3d at 215 (“To assess this
[substantively-reasonable] argument, we ‘examin[e] the totality of the circumstances to see whether the sentencing
court abused its discretion in concluding that the sentence it chose satisfied the standards set forth in § 3553(a).’”
(quoting United States v. Mendoza-Mendoza, 597 F.3d 212, 216 (4th Cir. 2011))); United States v. Fuentes-Moreno,
954 F.3d 383, 396 (1st Cir. 2020) (‘“[T]he substantive reasonableness of a sentence turns on whether the sentencing
court articulated a plausible sentencing rationale and reached a defensible result.’” (quoting United States v Matos-de-
Jesús, 856 F.3d 174, 179 (1st Cir. 2017)))); United States v. Fraga, 704 F.3d 432, (5th Cir. 2013) (“In sum, we find that
in light of Fraga’s criminal history and characteristics, the nine-month deviation from the Guidelines range was
substantively reasonable and, in accordance with §3553(a), was ‘not greater than necessary’ to effectuate the goals of
sentencing.”).
106 U.S.S.G. §§ 2A3.5, 2A3.6.
107 Section 2A3.5 sets a base offense level of 16 for Tier III defendants; 14 for Tier II defendants; and 12 for Tier I
defendants, respectively. Without further adjustment, this would translate to a sentence of imprisonment somewhere
between 24 and 30 months for a Tier III defendant; between 18 and 24 months for a Tier II defendant; and between 10
Congressional Research Service

16

SORNA: A Legal Analysis of 18 U.S.C. § 2250

[A] sex offender whose offense is punishable by imprisonment for more than 1 year and-
(A) is comparable to or more severe than the following offenses, or an attempt or
conspiracy to commit such an offense:
(i) aggravated sexual abuse or sexual abuse (as described in sections 2241 and 2242
of title 18); or
(ii) abusive sexual contact (as described in section 2244 of title 18) against a minor
who has not attained the age of 13 years;
(B) involves kidnapping of a minor (unless committed by a parent or guardian); or
(C) occurs after the offender becomes a tier II sex offender.108
A SORNA Tier II sex offender is:
[A] sex offender other than a tier III sex offender whose offense is punishable by
imprisonment for more than 1 year and-
(A) is comparable to or more severe than the following offenses, when committed
against a minor, or an attempt or conspiracy to commit such an offense against a minor:
(i) sex trafficking (as described in section 1591 of title 18);
(ii) coercion and enticement (as described in section 2422(b) of title 18);
(iii) transportation with intent to engage in criminal sexual activity (as described in
section 2423(a)) of title 18;
(iv) abusive sexual contact (as described in section 2244 of title 18);
(B) involves-
(i) use of a minor in a sexual performance;
(ii) solicitation of a minor to practice prostitution; or
(iii) production or distribution of child pornography; or
(C) occurs after the offender becomes a tier I sex offender.109
A SORNA Tier I sex offender is any sex offender who is not a Tier II or III sex offender.110
As noted earlier, the courts use a “categorical approach” to determine whether a prior state,
military, or foreign conviction qualifies a defendant as a Tier I, II, or III sex offender. In the
categorical approach, they examine the elements of the state offense. Here too, courts favor the
categorical approach when SORNA describes the qualifying state statute of conviction by
reference to a particular federal statute or statutes;111 or when it refers to “elements” rather than
“conduct”;112 or to “convictions” rather than “conduct committed.”113 Under the categorical

and 16 months for a Tier I defendant. U.S.S.G. § 4A1.1; id. Sentencing Table.
108 U.S.S.G. § 2A3.5 app. n. 1 (“For purposes of this guideline: . . . ‘Tier III offender’ ha[s] the meaning given the
term[] tier III sex offender’ … in 34 U.S.C. §20911.”); 34 U.S.C. § 20911(4).
109 U.S.S.G. § 2A3.5 app. n. 1 (“For purposes of this guideline: . . . ‘Tier II offender’ ha[s] the meaning given the term[]
tier II sex offender’ … in 34 U.S.C. §20911.”); 34 U.S.C. § 20911(3).
110 U.S.S.G. § 2A3.5 app. n. 1 (“For purposes of this guideline: . . . ‘Tier I offender’ ha[s] the meaning given the term[]
tier I sex offender’ … in 34 U.S.C. §20911.”); 34 U.S.C. § 20911(2).
111 United States v. Walker, 931 F.3d 576, 579 (7th Cir. 2019); United States v. Barcus, 892 F.3d 228, 232-32 (6th Cir.
2018); United States v. Berry, 814 F.3d 192, 197 (4th Cir. 2016); United States v. Morales, 801 F.3d 1, 6 (1st Cir.
2015); United States v. White, 782 F.3d 1118, 1134 (10th Cir. 2015).
112 United States v. Rogers, 804 F.3d 1233, 1237 (7th Cir. 2015); United States v. Cabrera-Gutierrez, 756 F.3d 1125,
1133 (9th Cir. 2013).
113 Morales, 801 F.3d at 5. Recall that the courts apply a circumstance-specific approach in analyzing the age elements
of federal offenses in the categorical federal-elements-versus-state-elements approach. United States v. Escalante, 933
F.3d 395, 401-02 (5th Cir. 2019) (“Applying that hybrid approach to this case, SORNA’s sex offender tier
classification imposes circumstance-specific conditions on the cross-referenced offenses. Title 34 U.S.C. § 20911(3)
Congressional Research Service

17

SORNA: A Legal Analysis of 18 U.S.C. § 2250

approach, the statutory elements of the prior state offense must fit completely within the footprint
created by the elements of the federal statute or statutes. There is no match if the state statute
sweeps more broadly than its federal counterpart, in which case the state conviction may not
serve as a SORNA predicate for tier-classification purposes.
For example, the Fourth Circuit used the categorical approach to determine whether a defendant
convicted under a state “endangering the welfare of a child” statute qualified as a Tier III sex
offender.114 It decided that he did not.115 The relevant portion of SORNA requires that to qualify
as a Tier III defendant, there must be a conviction under a statute outlawing conduct comparable
or more severe (1) than aggravated sexual abuse or sexual abused as described in 18 U.S.C.
§§ 2241 and 2242, respectively; or (2) sexual contact as described in 18 U.S.C. § 2244 committed
against a child under 13 years of age.116 The Fourth Circuit reasoned that Sections 2241, 2242,
and 2244 each require physical contact.117 The state courts, however, had interpreted the
endangering statute to encompass conduct that did not involve physical contact.118 Conviction
under the state endangering statute was not necessarily a conviction for conduct comparable or
more severe than that outlawed in federal aggravated sexual abuse, sexual abuse, or sexual
contact statutes.119 Therefore, the defendant could not be classified as a Tier III sex offender.120
Section 2A3.6 of the Sentencing Guidelines applies to offenses under the aggravated sentencing
provisions of 18 U.S.C. § 2250(d). Section 2A3.6 sets the guideline sentence at the minimum
(imprisonment for 5 years),121 but acknowledges that upward departure may be warranted in a
particular case.122
Section 2A3.6 also supplies the sentencing guidance for a second offense whose existence may
help to explain why section 2259(d) is so infrequently invoked. Regardless of whether a sex
offender has failed to register, a sex offender who is required to register under federal or any other
law faces a sentencing enhancement of 10 years’ imprisonment, 18 U.S.C. § 2260A, when he

modifies the cross-referenced offenses with ‘when committed against a minor,’ and 34 U.S.C. §20911(4)(A) (ii)
modifies the cross-reference offenses with ‘against a minor who has not attained the age of 13 years.’ Therefore … we
hold that when classifying sex offender tier levels under 34 U.S.C. §§ 20911(2)-(4), the text of SORNA requires a
circumstance-specific inquiry into the victim’s age to determine whether the victim was, in fact, a minor at the time of
the offense.”); see also Berry, 814 F.3d at 197; White, 782 F.3d at 1135; United States v. Byun, 539 F.3d 982, 991 (9th
Cir. 2008).
114 Berry, 814 F.3d 192, 199-200 (4th Cir. 2016).
115 Id.
116 42 U.S.C. § 16911(4)(A)(i), (ii) [now 34 U.S.C. § 20911(4)(A)(i), (ii)].
117 Berry, 814 at 199.
118 Id. at 200.
119 Id.
120 Id.
121 U.S.S.G. § 2A3.6(a).
122 Id. app. n.4.
Congressional Research Service

18

SORNA: A Legal Analysis of 18 U.S.C. § 2250

commits any of a list of sex offenses.123 Moreover, recidivist federal sex offenders face the
prospect of mandatory life imprisonment.124
Supervised Release
Generally, when a court sentences a defendant to prison, it may also sentence him to a term of
supervised release.125 Supervised release is a parole-like regime under which a defendant is
subject to the oversight of a probation officer following his release from prison. The term of
supervised release for most crimes is either 1, 3, or 5 years depending on the severity of the crime
of conviction.126 Congress has authorized, or insisted upon, longer terms when the crime of

123 18 U.S.C. § 2260A (“Whoever, being required by Federal or other law to register as a sex offender, commits a
felony offense involving a minor under section 1201 [kidnaping], 1466A [obscene visual depiction of sexual abuse of a
child], 1470 [transfer of obscenity to a child], 1591 [commercial sex trafficking], 2241 [aggravated sexual abuse], 2242
[sexual abuse], 2243 [sexual abuse of a minor or ward], 2244 [abusive sexual contact], 2245 [sexual abuse resulting in
death], 2251 [sexual exploitation of a child], 2251A [selling a child], 2260 [production of child pornography for U.S.
import], 2421 [transportation for illicit sexual purposes], 2422 [coercion or enticement to travel], 2423 [transportation
for illicit sex with a child], or 2425 [interstate transmission of information related to a child], shall be sentenced to a
term of imprisonment of 10 years in addition to the imprisonment imposed for the offense under that provision. The
sentence imposed under this section shall be consecutive to any sentence imposed for the offense under that
provision.”).
124 18 U.S.C. §3559(e) (“(e) Mandatory Life Imprisonment for Repeated Sex Offenses Against Children.-
(1) In general.-A person who is convicted of a Federal sex offense in which a minor is the victim shall be sentenced to
life imprisonment if the person has a prior sex conviction in which a minor was the victim, unless the sentence of death
is imposed.
(2) Definitions.-For the purposes of this subsection-
(A) the term ‘Federal sex offense’ means an offense under section 1591 (relating to sex trafficking of children), 2241
(relating to aggravated sexual abuse), 2242 (relating to sexual abuse), 2244(a)(1) (relating to abusive sexual contact),
2245 (relating to sexual abuse resulting in death), 2251 (relating to sexual exploitation of children), 2251A (relating to
selling or buying of children), 2422(b) (relating to coercion and enticement of a minor into prostitution), or 2423(a)
(relating to transportation of minors);
(B) the term ‘State sex offense’ means an offense under State law that is punishable by more than one year in prison
and consists of conduct that would be a Federal sex offense if, to the extent or in the manner specified in the applicable
provision of this title-
(i) the offense involved interstate or foreign commerce, or the use of the mails; or
(ii) the conduct occurred in any commonwealth, territory, or possession of the United States, within the special
maritime and territorial jurisdiction of the United States, in a Federal prison, on any land or building owned by, leased
to, or otherwise used by or under the control of the Government of the United States, or in the Indian country (as
defined in section 1151);
(C) the term ‘prior sex conviction’ means a conviction for which the sentence was imposed before the conduct occurred
constituting the subsequent Federal sex offense, and which was for a Federal sex offense or a State sex offense;
(D) the term ‘minor’ means an individual who has not attained the age of 17 years; and
(E) the term ‘State’ has the meaning given that term in subsection (c)(2).
(3) Nonqualifying Felonies.-An offense described in section 2422(b) or 2423(a) shall not serve as a basis for sentencing
under this subsection if the defendant establishes by clear and convincing evidence that-
(A) the sexual act or activity was consensual and not for the purpose of commercial or pecuniary gain;
(B) the sexual act or activity would not be punishable by more than one year in prison under the law of the State in
which it occurred; or
(C) no sexual act or activity occurred.”).
125 Id. § 3583(a).
126 Id. § 3583(b).
Congressional Research Service

19

SORNA: A Legal Analysis of 18 U.S.C. § 2250

conviction is a particular drug, terrorist, or sex offense.127 Section 2250 is not among the sex
offenses that triggers the longer terms of supervised release and consequently comes with a
maximum three-year term of supervised release.128 Like the term of imprisonment, the term and
conditions of supervised release must be procedurally and substantively reasonable.129 A term of
supervised release is procedurally unreasonable when the district court miscalculates the
Sentencing Guidelines’ recommendation or fails to provide an individualized explanation for a
discretionary condition.130 A term of supervised release is substantively unreasonable when the
district court inappropriately weighs the statutory sentencing factors in the context of the
defendant and the circumstances of the case, or the sentence is shockingly severe or shockingly
lenient.131
The statute and the Sentencing Guidelines establish an array of mandatory and discretionary
conditions for those on supervised release. The mandatory conditions require the defendant to
 avoid committing any additional federal, state, or local offenses;
 refrain from the unlawful possession of controlled substances;
 participate in a domestic violence rehabilitation program, if he has been
convicted of domestic violence;
 submit to periodic drug tests, unless the court suspends the condition if the
defendant poses a low risk of future substance abuse;
 pay installments to satisfy any outstanding fines or special assessments;
 satisfy any outstanding restitution requirements;
 comply with any SORNA registration demands; and
 submit to the collection of a DNA sample.132
A sentencing court may also impose any condition from the statutory inventory of discretionary
conditions for probation.133 In addition, the Sentencing Guidelines specify thirteen “standard”

127 E.g., 21 U.S.C. § 841(b); 18 U.S.C. § 3583(j), (k).
128 18 U.S.C. §§ 3583(k), 2250, 3581(b)(3), 3583(b)2).
129 United States v. Eaglin, 913 F.3d 88, 94 (2d Cir. 2019); United States v. Trailer, 827 F.3d 933, 935-36 (11th Cir.
2016); see also United States v. Jones, 798 F.3d 613, 619 (2d Cir. 2015); United States v. James, 792 F.3d 962, 967
(8th Cir. 2015).
130 E.g., Eaglin, 913 F.3d at 94; United States v. Brown, 826 F.3d 835, 839 (5th Cir. 2016); United States v. Medina,
779 F.3d 55, 58-59 (1st Cir. 2015); United States v. Baker, 755 F.3d 515, 522-23 (7th Cir. 2014).
131 Eaglin, 913 F.3d at 94; Trailer, 827 F.3d at 936; James, 792 F.3d at 968; see also Jones, 798 F.3d at 619 (“In
determining the length and conditions of supervised release … a court must consider the same § 3553(a) factors that
guide sentencing determinations generally.”).
132 18 U.S.C. § 3583(d), (e); U.S.S.G. § 5D1.3(a)(1)-(8).
133 18 U.S.C. § 3583(d). The applicable discretionary conditions for probation under Section § 3563(b) include “that the
defendant - (1) support his dependents and meet other family responsibilities; (2) make restitution to a victim of the
offense under section 3556 (but not subject to the limitation of section 3663(a) or 3663A(c)(1)(A)); (3) give to the
victims of the offense the notice ordered pursuant to the provisions of section 3555; (4) work conscientiously at suitable
employment or pursue conscientiously a course of study or vocational training that will equip him for suitable
employment; … (16) permit a probation officer to visit him at his home or elsewhere as specified by the court; (17)
answer inquiries by a probation officer and notify the probation officer promptly of any change in address or
employment; … (23) if required to register under the Sex Offender Registration and Notification Act, submit his
person, and any property, house, residence, vehicle, papers, computer, other electronic communication or data storage
devices or media, and effects to search at any time, with or without a warrant, by any law enforcement or probation
officer with reasonable suspicion concerning a violation of a condition of probation or unlawful conduct by the person,
and by any probation officer in the lawful discharge of the officer’s supervision functions.”
Congressional Research Service

20

SORNA: A Legal Analysis of 18 U.S.C. § 2250

conditions;134 eight “special” conditions;135 and “additional” special conditions.136 Finally, the
district court may impose any “specific” condition that, like the other discretionary conditions,
meets the following statutory standards:
 “(1) is reasonably related to the factors set forth in section 3553(a)(1) [the nature
and circumstances of the offense and the history an characteristics of the
defendant], (a)(2)(B), (a)(2)(C), and (a)(2)(D) [the need – (B) to afford adequate
deterrence … (C) to protect the public from further crimes of the defendant; and
(D) to provide the defendant with needed educational or vocation training,
medical care, or other correctional treatment in the most effective manner];
 (2) involves no greater deprivation of liberty than is reasonably necessary for the
purposes set forth in section 3553(a)(2)(B), (a)(2)(C), and (a)(2)(D); and
 (3) is consistent with any pertinent policy statements issued by the Sentencing
Commission pursuant to 28 U.S.C. 994(a).”137
Restrictions on a defendant’s association with children often appear among the discretionary
conditions for supervised release for Section 2250 offenders. Whether the conditions survive
appellate review turns upon their breadth, the district court’s justification for imposing them, and
the features of individual cases.138

134 Under U.S.S.G. § 5D1.3(c), the standard conditions require an individual on supervised release to (1) report
promptly to the probation office upon release; (2) comply with directions to report thereafter; (3) remain in the judicial
district unless the probation officer approves departure; (4) answer the probation officer’s questions truthfully; (5) live
in a place the probation officer approves; (6) permit the probation officer to engage in searches and seizures; (7) seek
employment and remain employed; (8) avoid felons and those who engage in criminal activity; (9) notify probation
officer of arrests or police questioning; (10) refrain from possession of firearms, ammunition, or dangerous weapons;
(11) avoid becoming an informant without court approval; (12) obey probation officer instructions to notify third
persons of the risks to them that defendant poses; and (13) comply with the probation officer’s interpretation of the
conditions imposed.
135 Under U.S.S.G. § 5D1.3(d), the special conditions require an individual on supervised release to (1) support
dependents; (2) meet debt obligations; (3) provide the probation officer with access to financial information if the
defendant has pending restitution, forfeiture, fine, or victim notification obligations; (4) if the court suspects controlled
substance or alcohol abuse, refrain from possession of alcohol and participate in a substance abuse program if the court
suspects controlled substance or alcohol abuse; (5) participate in mental health program if the court believes defendant
needs treatment; (6) submit to deportation; (7) for sex offenders (the definition does not include Section 2250
offenders) participate in sex offender treatment and monitoring and limit computer use; and (8) notify the probation
officer of any change in economic circumstances that might affect payment of outstanding obligations relating to
restitution, fine, or special assessment.
136 Under U.S.S.G. § 5D1.3(e), the “additional” special conditions include: (1) “community confinement”; (2) “home
detention”; (3) “community service”; (4) “occupational restrictions”; (5) “curfew”; and (6) “intermittent confinement.”
137 18 U.S.C. § 3583(d).
138 E.g., United States v. Edwards, 944 F.3d 631, 633 (7th Cir. 2019) (upholding conditions, imposed on a Section 2250
defendant previously convicted of possession and distribution of child pornography, that banned contact with children
without permission of their parents and the defendant’s probation officer); United States v. Jennings, 930 F.3d 1024,
1026-27 (8th Cir. 2019) (upholding condition restraining the Section 2250 defendant from contacting his adult son
without the approval of his probation officer in light of the defendant’s “long history of abusive conduct” and noting
that the Eighth Circuit had “repeatedly upheld no-contact orders requiring defendants to seek permission from a
probation officer before contacting their own minor children, even where there is no history or likelihood of abusive
conduct”); United States v. Fey, 834 F.3d 1, 4 (1st Cir. 2016) (“‘[W]e have vacated associational conditions where the
defendant’s prior sex offense occurred in the distant past, the intervening time was marked by lawful social activity,
and the district court did not otherwise explain the need for such restrictions.’ … And although the condition does not
place an outright ban on Frey’s association with minors, it operates not in limited contexts but in all contexts.” (quoting
United States v. Pabon, 819 F.3d 26, 31 (1st Cir. 2016))); United States v. Baker, 755 F.3d 515, 526-27 (7th Cir. 2014)
(remanding for resentencing after the government conceded that a ban on the defendant’s contact with his children
Congressional Research Service

21

SORNA: A Legal Analysis of 18 U.S.C. § 2250

The court may modify the conditions of supervised release at any time.139 It may also revoke the
defendant’s supervised release and sentence him to prison for violating the conditions of
supervised release.140
Constitutional Considerations
Much of the litigation relating to Section 2250 and SORNA involves constitutional challenges
taking one of two forms. One argues that SORNA or Section 2250 operates in a manner that the
Constitution specifically forbids, for example in its clauses on Ex Post Facto laws, Due Process,
and Cruel and Unusual Punishment. The other argues that the Constitution does not grant
Congress the legislative authority to enact either Section 2250 or SORNA. These challenges
probe the boundaries of the Commerce Clause, the Necessary and Proper Clause, and the
Spending Clause, among others.
The Supreme Court addressed two of the most common constitutional issues associated with sex
offender registration laws before the enactment of SORNA. One addressed the Ex Post Facto
Clause implications of sex offender registration, Smith v. Doe;141 the other addressed Due Process
Clause implications, Connecticut Department of Public Safety v. Doe.142
Ex Post Facto
Neither the states nor the federal government may enact laws that operate Ex Post Facto.143 The
prohibition covers both statutes that outlaw conduct that was innocent when it occurred and
statutes that authorize imposition of a greater penalty for a crime than applied when the crime
occurred.144 The prohibitions, however, apply only to criminal statutes or to civil statutes whose
intent or effect is so punitive as to belie any but a penal characterization.145
In Smith, the Supreme Court dealt with the Ex Post Facto issue in the context of the Alaska sex
offender registration statute. It found the statute civil in nature and effect, not punitive, and
consequently its retroactive application did not violate the Ex Post Facto Clause.146 Its analysis147

should be vacated).
139 18 U.S.C. § 3583(e)(2).
140 Id. § 3583(e)(3), (h). Section 3583(k) purports, under certain circumstances, to require revocation of supervised
release imposed upon conviction for violating various federal sex offenses other than Section 2250. In United States v.
Haymond
, 139 S. Ct. 2369, 2373 (2019), the Supreme Court held in a plurality opinion that for a federal judge to do so,
without a jury and by a preponderance of the evidence, violates the Fifth and Sixth Amendments.
141 538 U.S. 84 (2003).
142 538 U.S. 1 (2003).
143 U.S. CONST. art. I, § 10, cl. 1; art. I, § 9, cl. 3.
144 Stogner v. California, 539 U.S. 607, 612 (2003).
145 Smith v. Doe, 538 U.S. 84, 92 (2003) (“This is the first time we have considered a claim that a sex offender
registration and notification law constitutes retroactive punishment forbidden by the Ex Post Facto Clause. The
framework for our inquiry, however, is well established. We must ascertain whether the legislature meant the statute to
establish ‘civil’ proceedings. If the intention of the legislature was to impose punishment, that ends the inquiry. If,
however, the intention was to enact a regulatory scheme that is civil and nonpunitive, we must further examine whether
the statutory scheme is so punitive either in purpose or effect as to negate the State’s intention to deem it ‘civil.’
Because we ordinarily defer to the legislature’s stated intent, only the clearest proof will suffice to override legislative
intent and transform what has been denominated a civil remedy into a criminal penalty.”).
146 Id. at 107-08.
147 Id. at 97 (“In analyzing the effects of the Act we refer to the seven factors noted in Kennedy v. Mendoza-Martinez,
Congressional Research Service

22

SORNA: A Legal Analysis of 18 U.S.C. § 2250

has colored the lower federal courts’ treatment of Ex Post Facto challenges to Section 2250 and
SORNA. “Relying on Smith, circuit courts have consistently held that SORNA does not violate
the Ex Post Facto Clause,”148 with one apparently limited exception. The Ninth Circuit initially
held that the SORNA obligations for pre-enactment juveniles constituted punishment, because
they stripped juveniles of the confidentiality that then surrounded juvenile proceedings.149 Thus,
their enforcement against such juveniles would constitute an Ex Post Facto violation, the Ninth
Circuit decided.150 It subsequently concluded that “not all applications of SORNA to individuals
based on juvenile sex offender determinations are sufficiently punitive to violate the Ex Post
Facto Clause.”151 This is particularly true, the Ninth Circuit opined, when SORNA did not result
in a loss of confidentiality because of the disclosure requirements that accompanied the original
qualifying juvenile adjudication.152
Due Process
The Supreme Court’s assessment of state sex offender registration statutes has been less
dispositive of due process issues because of the variety of circumstances in which they may arise.
Neither the federal nor state governments may deny a person of “life, liberty, or property, without
due process of law.”153 Due process requirements take many forms. They preclude punishment
without notice: “[a] conviction fails to comport with due process if the statute under which it is
obtained fails to provide a person of ordinary intelligence fair notice of what is prohibited, or is so
standardless that it authorizes or encourages seriously discriminatory enforcement.”154 They bar
restraint of liberty or the enjoyment of property without an opportunity to be heard: “[a]n
essential principle of due process is that a deprivation of life, liberty, or property be preceded by
notice and opportunity for hearing appropriate to the nature of the case.”155 They proscribe any
punishments or restrictions that are so fundamentally unfair as to violate fundamental fairness,
that is, substantive due process.
In Connecticut Dep’t of Public Safety v. Doe, the Court found no due process infirmity in the
Connecticut sex offender registration regime in spite of its failure to afford offenders an

372 U.S. 144, 168-69 (1963), as a useful framework . . . .The factors most relevant to our analysis are whether, in its
necessary operation, the regulatory scheme: has been regarded in our history and traditions as a punishment; imposes
an affirmative disability or restraint; promotes the traditional aims of punishment; has a rational connection to a
nonpunitive purpose; or is excessive with respect to this purpose.”).
148 United States v. Felts, 674 F.3d 599, 606 (6th Cir. 2012) (citing, among others, United States v. Guzman, 591 F.3d
83, 94 (2d Cir. 2010); United States v. Gould, 568 F.3d 459, 466 (4th Cir. 2009); United States v. Young, 585 F.3d
199, 203-06 (5th Cir. 2009); United States v. Ambert, 561 F.3d 1202, 1207 (11th Cir. 2009)); see also Willman v. Att’y
Gen., 972 F.3d 819, 824-25 (6th Cir. 2020) (collecting cases in accord); United States v. Diaz, 967 F.3d 107, 110-11
(2d Cir. 2020); United States v. Wass, 954 F.3d 184, 192-93 (4th Cir. 2020) (holding Wass’s Ex Post Facto claim fails
because SORNA is punitive neither in purpose nor effect); United States v. Holcombe, 883 F.3d 12, 18 (2d Cir. 2018);
United States v. Billiot, 785 F.3d 1266, 1269-70 (8th Cir. 2015); United States v. White, 782 F.3d 1118, 1126-27 (10th
Cir. 2015); United States v. Elk Shoulder, 738 F.3d 948, 953-54 (9th 2012); United States v. Parks, 698 F.3d 1, 4-6 (1st
Cir. 2012); United States v. W.B.H., 664 F.3d 848, 852-60 (11th Cir. 2011).
149 United States v. Juvenile Male, 590 F.3d 924, 941-42 (9th Cir. 2010), vac’d as moot, 564 U.S. 932, 933 (2011).
150 Id.
151 United States v. Elkins, 685 F.3d 1038, 1048 (9th Cir. 2012) (citing United States v. Juvenile Male, 670 F.3d 999
(9th Cir. 2012)).
152 Id. at 1048-49.
153 U.S. CONST. amends. V, XIV.
154 United States v. Williams, 553 U.S. 285, 304 (2008).
155 Hamdi v. Rumsfeld, 542 U.S. 507, 533 (2004).
Congressional Research Service

23

link to page 17 SORNA: A Legal Analysis of 18 U.S.C. § 2250

opportunity to prove they were not dangerous.156 Doe suffered no injury from the absence of a
pre-registration hearing to determine his dangerousness, in the eyes of the Court, because the
system required registration of all sex offenders, both those who were dangerous and those who
were not.157 Connecticut Dep’t of Public Safety forecloses the assertion that offenders are entitled
to a pre-registration “dangerousness” hearing; the relevant question under SORNA is prior
conviction, not dangerousness.158
In Lambert v. California, the Court dealt with sufficiency of notice. There, the Court held invalid
a city ordinance that required all felony offenders to register within five days of their arrival in
the city.159 The Court explained that “[w]here a person did not know of the duty to register and
where there was no proof of the probability of such knowledge, he may not be convicted
consistently with due process.”160 Since “by the time that Congress enacted SORNA, every state
had a sex offender registration law in place,”161 attempts to build on Lambert have been rejected,
because the courts concluded that offenders knew or should have known of their duty to
register.162 Suggestions that differences between state and federal requirements result in
impermissible vagueness have fared no better.163
To qualify as a violation of substantive due process, a governmental regime must intrude upon a
right “deeply rooted in our history and traditions,” or “fundamental to our concept of

156 Conn. Dep’t of Pub. Safety v. Doe, 538 U.S. 1 (2003).
157 Id. at 7-8.
158 United States v. Ambert, 561 F.3d 1202, 1208 (11th Cir. 2009).
159 Lambert v. California, 355 U.S. 225 (1957).
160 Id. at 229-30.
161 Smith v. Doe, 538 U.S. 84, 90 (2003). A list of the citations to existing state sex offender registration laws is
attached at the end of this report.
162 United States v. Hester, 589 F.3d 86, 92-93 (2d Cir. 2009) (“In Lambert, the Supreme Court stated: ‘Registration
laws are common and their range is wide. . . . But the present ordinance is entirely different. Violation of its provisions
is unaccompanied by any activity whatever, mere presence in the city being the test. Moreover, circumstances which
might move one to inquire as to the necessity of registration are completely lacking.’ Like our sister circuits, we find
this last statement – regarding ‘circumstances which might move one to inquire as to the necessity of registration’ – to
be critical.” (citing United States v. Whaley, 577 F.3d 254, 262 (5th Cir. 2009); United States v. Gould, 568 F.3d 459,
468-69 (4th Cir. 2009); United States v. Dixon, 551 F.3d 578, 584 (7th Cir. 2009); United States v. Hinckley, 550 F.3d
926, 938 (10th Cir. 2009); and United States v. May, 535 F.3d 912, 921 (8th Cir. 2008))). See also United States v.
Gagnon, 621 F.3d 30, 33 (1st Cir. 2010); United States v. W.B.H., 664 F.3d 848, 852-60 (11th Cir. 2011); United
States v. Elkins, 683 F.3d 1039, 1049-50 (9th Cir. 2012).
163 United States v. Pendleton, 636 F.3d 78, 86 (3d Cir. 2011) (“Pendleton’s federal duty to register under SORNA was
not dependent upon his duty to register under Delaware law. A person of ordinary intelligence would not assume that as
long as he or she complied with state law on a particular issue, there would be no risk of running afoul of federal
law.”). See also United States v. Alsante, 812 F.3d 544, 547-48 (6th Cir. 2016) (“[T]he Due Process Clause does not
offer convicted defendants at sentencing [for violation of § 2250] the same constitutional protections afforded
defendants at a criminal trial.”); United States v. Elk Shoulder, 738 F3d 948, 955 (9th Cir. 2012) (noting that state
notice that the sex offender must register with state authorities is all the Due Process Clause demands for SORNA
purposes). The Sixth Circuit in Felts expressed a possible due process concern that it was not required to address but
one that might arise “where an inconsistency between federal and non-complying state regimes would render it
impractical, or even impossible, for an offender to register under federal law.” United States v. Felts, 674 F.3d 599, 605
(6th Cir. 2012). The affirmative defense in 18 U.S.C. § 2250(c) seems designed to address this concern. See supra
“Affirmative Defense” section of this report. In any event, the Felts concern apparently no longer troubles the Sixth
Circuit, see Willman v. Att’y Gen., 972 F.3d 819, 827 (6th Cir. 2020) (“A person of ordinary intelligence would know
if he had been convicted of a sex offense, and he would know that being removed from his state sex offense registry –
on its own – would not change whether he had been convicted. Accordingly, Willman’s vagueness claim is not
plausible on its face.”); see also United States v. Burgee, 988 F.3d 1954, 1060 (8th Cir. 2021); United States v. Collazo,
984 F.3d 1308, 1325 (9th Cir. 2021).
Congressional Research Service

24

SORNA: A Legal Analysis of 18 U.S.C. § 2250

constitutionally ordered liberty.”164 Perhaps because the threshold is so high, Section 2250 and
SORNA have only infrequently been questioned on substantive due process grounds.165
Right to Travel
“The ‘right to travel’ . . . embraces at least three different components. It protects the right of a
citizen of one State to enter and to leave another State, the right to be treated as a welcome visitor
rather than an unfriendly alien when temporarily present in the second State, and, for those
travelers who elect to become permanent residents, the right to be treated like other citizens of
that State.”166
Section 2250, it has been contended, violates the right to travel because it punishes those who
travel from one state to another yet fail to register, but not those who fail to register without
leaving the state. The courts have responded, however, that the right must yield to compelling
state interest in the prevention of future sex offenses.167
Cruel and Unusual Punishment
The Eighth Amendment bars the federal government from inflicting “cruel and unusual
punishment.”168 A punishment is cruel and unusual under the Eighth Amendment when it is
grossly disproportionate to the offense.169 Section 2250’s 10-year maximum has survived the
claim that is grossly disproportionate to the crime of failing to maintain current and accurate sex
offender registration information.170 The courts have also declined to hold that SORNA’s
registration regime itself violates the Eighth Amendment, either because they do not consider the
requirements punitive or because they do not consider them grossly disproportionate.171

164 Washington v. Glucksberg, 521 U.S. 702, 727 (1997).
165 See United States v. Ambert, 561 F.3d 1202, 1208-09 (11th Cir. 2009) (rejecting a substantive due process claim).
166 Saenz v. Roe, 526 U.S. 489, 500 (1999).
167 United States v. Holcombe, 883 F.3d 12, 18 (2d Cir. 2012); United States v. Shenandoah, 595 F.3d 151, 162-62 (3d
Cir. 2010), abrogated on other grounds, Reynolds v. United States, 565 U.S. 432 (2012); Ambert, 561 F.3d at 1209-10;
cf. Bacon v. Neer, 631 F.3d 875, 878 (8th Cir. 2011); see also Willman, 972 F.3d at 826 (“But those [SORNA]
registration obligations do not burden a sex offender’s movement in a way that violates a person’s right to travel.”
(collecting cases in accord)).
168 U.S. CONST. amend. VIII.
169 Graham v. Florida, 560 U.S. 48, 59 (2010).
170 United States v. Martin, 677 F.3d 818, 821-22 (8th Cir. 2012).
171 Willman, 972 F.3d at 825 (“SORNA is not a punishment for purposes of the Ex Post Facto Clause. It follows,
therefore, that SORNA is not a punishment for purposes of the Eighth Amendment either.”); United States v. Diaz, 967
F.3d 107 (2d Cir. 2020) (“Our precedent precludes the argument that sex offender registration and notification
requirements are punitive, see [Doe v.] Pataki, 120 F.3d [1263,] 1285 ([2d Cir. 1997)], and the Supreme Court’s similar
conclusion in Smith v. Doe[, 538 U.S 84, 105 (2003)] forecloses this Court’s ability to revisit the Pataki decision. 538
U.S. at 105. Accordingly, the district court correctly concluded that SORNA does not violate the … Eighth
Amendment.”); United States v. Under Seal, 709 F.3d 257, 263-66 (4th Cir. 2013) (holding that SORNA’s registration
requirements do not constitute punishment); United States v. Juvenile Male, 670 F.3d 999, 1010 (9th Cir 2012) (“Given
the high standard that is required to establish cruel and unusual punishment, we hold that SORNA’s registration
requirements do not violate the Eighth Amendment.”); cf. United States v. May, 535 F.3d 912, 920 (8th Cir. 2008) (not
punishment).
Congressional Research Service

25

SORNA: A Legal Analysis of 18 U.S.C. § 2250

Legislative Authority
The most frequent constitutional challenge to SORNA and Section 2250 is that Congress lacked
the constitutional authority to enact them. Some of these challenges speak to the breadth of
Congress’s constitutional powers, such as those vested under the Tax and Spending Clause, the
Commerce Clause, or the Necessary and Proper Clause. Others address contextual limitations on
the exercise of those powers imposed by such things as the non-delegation doctrine or the
principles of separation of powers reflected in the Tenth Amendment.
Tenth Amendment
The federal government enjoys only such authority as may be traced to the Constitution; the
Tenth Amendment reserves to the states and the people powers not vested in federal
government.172 Challengers of Congress’s legislative authority to enact SORNA or the Justice
Department’s authority to prosecute failure to comply with its demands on Tenth Amendment
grounds have had to overcome substantial obstacles. First, several of Congress’s constitutional
powers are far reaching and SORNA appears within their grasp. Among them are the powers to
regulate interstate and foreign commerce, to tax and spend for the general welfare, and to enact
laws necessary and proper to effectuate the authority the Constitution provides.173 Second,
although a particular statute may implicate the proper exercise of more than one constitutional
power, only one is necessary for constitutional purposes.174 Third, “while SORNA imposes a duty
on the sex offender to register, it nowhere imposes a requirement on the State to accept such
registration.”175 Finally, until recently some courts have held that individual defendants lacked
standing to contest the statutory validity on the basis of constitutional provisions designed to
protect the institutional interests of governmental entities rather than to protect private interests.
Standing
Several earlier courts rejected SORNA challenges under the Tenth Amendment on the grounds
that the defendants lacked standing. Standing refers to the question of whether a party in litigation
is asserting or “standing” on his or her own rights or only upon those of another. At one time,
there was no consensus among the lower federal appellate courts over whether individuals had
standing to present Tenth Amendment claims.176 More specifically, at least two circuits had held

172 U.S. CONST. amend. X (“The powers not delegated to the United States by the Constitution, nor prohibited by it to
the States, are reserved to the States respectively, or to the people.”).
173 U.S. CONST. art. I, § 8, cls. 1, 3, 18 (“The Congress shall have Power To lay and collect Taxes, Duties, Imposts and
Excises, to pay the Debts and provide for the common Defence and general Welfare of the United States . . . . To
regulate Commerce with foreign Nations, and among the several States, and with the Indian Tribes; . . . . . And To
make all Laws which shall be necessary and proper for carrying into Execution the foregoing Powers, and all other
Powers vested by this Constitution in the Government of the United States, or in any Department or Officer thereof.”).
174 Cf. U.S. CONST. art. I, § 8, cl. 18.
175 United States v. White, 782 F.3d 1118, 1128 (10th Cir. 2015) (quoting Kennedy v. Allera, 612 F.3d 261, 269 (4th
Cir. 2010); citing United States v. Richardson, 754 F.3d 1143, 1146-47 (9th Cir. 2014); United States v. Felts, 674 F.3d
599, 602 (6th Cir. 2012); United States v. Johnson, 632 F.3d 912, 920 (5th Cir. 2011); United States v. Guzman, 591
F.3d 83, 94 (2d Cir. 2010)).
176 United States v. Johnson, 632 F.3d 912, 919 (5th Cir. 2011) (“The First, Second, Third, Eighth, and Tenth Circuits
have held that private parties do not having standing to bring such claims. The Seventh and Eleventh Circuits have
permitted private parties to assert Tenth Amendment claims.”).
Congressional Research Service

26

SORNA: A Legal Analysis of 18 U.S.C. § 2250

that defendants convicted under Section 2250 lacked standing to challenge their convictions on
Tenth Amendment grounds.177
Those courts, however, did not have the benefit of the Supreme Court’s Bond and Reynolds
decisions. In Bond, the Court pointed out that a defendant who challenges the Tenth Amendment
validity of the statute under which she was convicted “seeks to vindicate her own constitutional
rights . . . . The individual, in a proper case, can assert injury from governmental action taken in
excess of the authority that federalism defines. Her rights in this regard do not belong to the
State.”178 In Reynolds, the Court implicitly recognized the defendant’s standing when, at his
behest, it held that SORNA did not apply to pre-enactment convictions until after the Attorney
General had exercised his delegated authority.179 Yet the fact that a defendant’s Tenth Amendment
challenge may be heard does not mean it will succeed.180
Spending for the General Welfare
“The Congress shall have Power To lay and collect Taxes . . . to pay the Debts and provide for
the common Defence and general Welfare of the United States. . . .”181 “Objectives not thought to
be within Article I’s enumerated legislative fields, may nevertheless be attained through the use
of the spending power and the conditional grant of federal funds.”182 In the past, the Supreme
Court has described the limits on Congress in general terms:
[First,] the exercise of the spending power must be in pursuit of the general welfare . . .
Second . . . if Congress desires to condition the States’ receipt of federal funds, it must do
so unambiguously . . . . Third . . . conditions on federal grants . . . [must be] []related to
the federal interest in particular national projects or programs. . . . Finally. . . other
constitutional provisions may provide an independent bar to the conditional grant of federal
funds.183
Moreover, at the end of its 2011 term in National Federation of Business v. Sebelius, seven
members of a divided Court found that the power of the Spending Clause may not be exercised to

177 United States v. Shenandoah, 595 F.3d 151, 161-62 (3d Cir. 2010), abrogated by Reynolds v. United States, 432
U.S. 432 (2012) (“Shenandoah argues that SORNA is unconstitutional because it compels New York law enforcement
to accept registrations from federally-mandated sex offender programs in violation of the Tenth Amendment . . . . . We
need not tarry long on this argument, because Shenandoah lacks standing to raise this issue.”); United States v. Zuniga,
579 F.3d 845, 851 (8th Cir. 2009).
178 Bond v. United States, 564 U.S. 211, 220 (2011); see also United States v. Felts, 674 F.3d 599, 607 (6th Cir. 2012)
(“The United States counters that Felts lacks standing to assert SORNA’s alleged violation. This is no longer an
accurate statement of law. The United States’ brief was filed on June 6, 2011, ten days before the Supreme Court
decided Bond . . . . An individual can assert that the enforcement of a law violates the Tenth Amendment, particularly
when a defendant has a significant liberty interest at stake. Because Felts was prosecuted for violating SORNA, he has
standing to challenge the act for being enforced in violation of the Tenth Amendment.”).
179 Reynolds, 565 U.S. at 442-43; see also United States v. Knutson, 680 F.3d 1021, 1023 (8th Cir. 2012) (“This court
had previously held that pre-Act offenders lack standing to challenge SORNA. However, after the parties filed their
briefs, the Supreme Court ruled that pre-Act offenders have standing to challenge SORNA under the non-delegation
doctrine. Reynolds, 132 S. Ct. at 984.”).
180 White, 782 F.3d at 1128 (“We join all of the federal circuits to have considered this issue in holding that SORNA
does not violate the Tenth Amendment.”) (citing cases from the Ninth, Eighth, Fifth, and Second Circuits).
181 U.S. CONST. art. I, § 8, cl. 1; see generally Cong. Research Serv., The Constitution of the United States of America:
Analysis and Interpretation
, S. DOC. NO, 112-9, https://constitution.congress.gov/browse/essay/artI-S8-C1-
2/ALDE_00001055/.
182 South Dakota v. Dole, 483 U.S. 203, 207 (1987).
183 Id. at 207-08.
Congressional Research Service

27

SORNA: A Legal Analysis of 18 U.S.C. § 2250

coerce state participation in a federal program.184 Congress may use the spending power to induce
state participation; it may not present the choice under such circumstances that a state has no
realistic alternative but to acquiesce.185
SORNA establishes minimum standards for the state sex offender registries and authorizes the
Attorney General to enforce compliance by reducing by up to 10% the funds a non-complying
state would receive in criminal justice assistance funds.186 Some defendants have suggested that
this impermissibly commandeers state officials to administer a federal program and therefore
exceeds Congress’s authority under the Spending Clause. Generally, while Congress may
encourage state participation in a federal program, it is not constitutionally free to require state
legislators or executive officials to act to enforce or administer a federal regulatory program.187 To
date, the federal appellate courts have held that SORNA’s reduction in federal law enforcement
assistance grants for a state’s failure to comply falls on the encouragement, rather than the
directive, side of the constitutional line.188 The fact that most states do not feel compelled to bring
their systems into full SORNA compliance may lend credence to that assessment.189
Commerce Clause
“The Congress shall have Power . . . To regulate Commerce with foreign Nations, and among the
several States, and with the Indian Tribes.”190 The Supreme Court explained in Lopez, and again
in Morrison, that Congress’s Commerce Clause power is broad but not boundless.

184 Nat’l Fed. of .Indep. Bus. v. Sebelius, 567 U.S. 519, 575-86 (2012) (Roberts, Ch. J. joined by Breyer and Kagan,
JJ.); id. at 671-89 (Scalia, J., dissenting, joined by Kennedy, Thomas, and Alito, JJ.).
185 Cf. id. at 581-82 (Roberts, Ch. J.) (“It is easy to see how the Dole Court could conclude that the threatened loss of
less than half of one percent of South Dakota’s budget left that State with a ‘prerogative’ to reject Congress’s desired
policy, ‘not merely in theory but in fact.’ The threatened loss of over 10 percent of a State’s overall budget, in contrast,
is economic dragooning that leaves the States with no real option but to acquiesce in the Medicaid expansion.”); id. at
676 (Scalia, J., dissenting) (“[W]hile Congress may seek to induce States to accept conditional grants, Congress may
not cross the ‘point at which pressure turns into compulsion, and ceases to be inducement.’”). See generally CRS
Report R42367, Medicaid and Federal Grant Conditions After NFIB v. Sebelius: Constitutional Issues and Analysis, by
Kenneth R. Thomas.
186 34 U.S.C. § 20925(a).
187 New York v. United States, 505 U.S. 144, 175-76 (1992); Printz v. United States, 521 U.S. 898, 935 (1997) (“We
held in New York that Congress cannot compel the States to enact or enforce a federal regulatory program. Today we
hold that Congress cannot circumvent that prohibition by conscripting the States’ officers directly.”).
188 United States v. Felts, 674 F.3d 599, 608 (6th Cir. 2012) (“SORNA does not fall under the rubric of Printz, but
rather relies on Congress’s spending power. Failure to implement SORNA results in a loss of 10% of federal funding
under [the law enforcement assistance program]. Conditioning of funds in this manner is appropriate under South
Dakota v. Dole
(stating that Congress’s power to condition the receipt of federal funds under the spending power is
valid so long as (1) the spending/withholding is in the pursuit of the general welfare; (2) the conditional nature is clear
and unambiguous; (3) the condition is rationally related to the purpose of the federal interest, program, or funding; and
(4) the conduct required to comply with the condition is not barred by the constitution itself).”). See also United States
v. White, 782 F.3d 1118, 1127-28 (10th Cir. 2015); United States v. Smith, 655 F.3d 839, 848 (8th Cir. 2011); United
States v. Johnson, 632 F.3d 912, 920 (5th Cir. 2011); Kennedy v. Allera, 612 F.3d 261, 268-70 (4th Cir. 2010); United
States v. Guzman, 591 F.3d 83, 95 (2d Cir. 2010).
189 The Justice Department indicates that eighteen states are now in substantial compliance with SORNA requirements.
U.S. Department of Justice, Office of Justice Programs, Office of Sex Offender Sentencing, Monitoring, Apprehending,
Registration, and Tracking (SMART), SORNA Implementation Status, available at https://smart.gov/sorna-map.htm.
190 U.S. CONST. art. I, § 8, cl. 3; see generally Cong. Research Serv., The Constitution of the United States of America:
Analysis and Interpretation
, S. DOC. NO, 112-9, https://constitution.congress.gov/browse/essay/artI-S8-C3-1-
1/ALDE_00001057/
Congressional Research Service

28

SORNA: A Legal Analysis of 18 U.S.C. § 2250

Modern Commerce Clause jurisprudence has identified three broad categories of activity
that Congress may regulate under its commerce power. First, Congress may regulate the
use of the channels of interstate commerce. Second, Congress is empowered to regulate
and protect the instrumentalities of interstate commerce, or persons or things in interstate
commerce, even though the threat may come only from intrastate activities. Finally,
Congress’ commerce authority includes the power to regulate those activities having a
substantial relation to interstate commerce . . . i.e., those activities that substantially affect
interstate commerce.191
The lower federal appellate courts have rejected Commerce Clause attacks on Section 2250 in the
interstate travel cases, because there they believe Section 2250 “fits comfortably with the first
two Lopez prongs[, i.e. the regulation of (1) the “channels” of interstate commerce and (2) the
“instrumentalities” of interstate commerce].”192 They have also rejected Commerce Clause
attacks on SORNA in intrastate cases based on the strength of the Necessary and Proper Clause:
Requiring sex offenders to update their registrations due to intrastate changes of address or
employment status is a perfectly logical way to help ensure that states will more effectively
be able to track sex offenders when they do cross state lines. To the extent that §16913
regulates solely intrastate activity, its means are reasonably adapted to the attainment of a
legitimate end under the commerce power and therefore proper.193
Necessary and Proper
The Supreme Court in Comstock described the breadth of Congress’s authority under the
Necessary and Proper Clause in the context of another Walsh Act provision. The Walsh Act
authorizes the Attorney General to hold federal inmates beyond their release date to initiate
federal civil commitment proceedings for the sexually dangerous.194 Comstock and others
questioned application of the statute on the grounds that it exceeded Congress’s legislative
authority under the Commerce and Necessary and Proper Clauses.195

191 United States v. Morrison, 529 U.S. 598, 608-09 (2000) (citing inter alia United States v. Lopez, 514 U.S. 549, 558-
59 (1995)). Of late, seven Justices of the Court have explained that the Commerce Clause does not authorize Congress
to punish those who elect not to engage in commerce. See Nat’l Fed. of Indep. Bus. v. Sebelius, 567 U.S. 519, 558
(Roberts, Ch. J. joined by Breyer and Kagan, JJ.) (“The individual mandate forces individuals into commerce precisely
because they elected to refrain from commercial activity. Such a law cannot be sustained under a clause authorizing
Congress to ‘regulate Commerce.’”); id. at 649 (Scalia, J., dissenting, joined by Kennedy, Thomas, and Alito, JJ.) (“But
that failure—that abstention from commerce—is not ‘Commerce.’ To be sure, purchasing insurance is ‘Commerce’;
but one does not regulate commerce that does not exist by compelling its existence.”).
192 United States v. Coleman, 675 F.3d 615, 620 (6th Cir. 2012) (citing inter alia United States v. Vasquez, 611 F.3d
325, 330-31 (7th Cir. 2010); United States v. Guzman, 591 F.3d 83, 89-92 (2d Cir. 2010); United States v. Whaley, 577
F.3d 254, 259-61 (5th Cir. 2009); United States v. Gould, 568 F.3d 459, 470-75 (4th Cir. 2009); United States v.
Ambert, 561 F.3d 1202, 1210-12 (11th Cir. 2009); United States v. Lawrence, 548 F.3d 1329, 1337 (10th Cir. 2008);
and United States v. May, 535 F.3d 912, 911-22 (8th Cir. 2008)). See also United States v. Bollinger, 798 F.3d 201,
217 (4th Cir. 2015) (“This Court has concluded that SORNA is constitutional because it regulates the use of the
channels and instrumentalities of interstate commerce.”); United States v. Manning, 786 F.3d 684, 685-86 (8th Cir.
2015); United States v. White, 782 F.3d 1118, 1123-26 (10th Cir. 2015); United States v. Parks, 698 F.3d 1, 6-7 (1st
Cir. 2012).
193 United States v Thompson, 811 F.3d 717, 723-25 (5th Cir. 2016); United States v. Pendleton, 636 F.3d 78, 87-88
(3d Cir. 2011) (quoting Guzman, 591 F.3d at 90-91; citing Vasquez, 611 F.3d at 330; Ambert, 561 F.3d at 1211-12; and
United States v. Howell, 552 F.3d 709, 717 (8th Cir. 2009)).
194 18 U.S.C. § 4248.
195 United States v. Comstock, 560 U.S. 126, 132 (2010); see generally, Cong. Research Serv., The Constitution of the
United States of America: Analysis and Interpretation
, S. DOC. NO. 112-9 (discussing the Necessary and Proper
Clause), https://constitution.congress.gov/browse/essay/artI-S8-C18-1/ALDE_00001242/
Congressional Research Service

29

SORNA: A Legal Analysis of 18 U.S.C. § 2250

The Court pointed out that the Necessary and Proper Clause has long been understood to
empower Congress to enact legislation “rationally related to the implementation of a
constitutionally enumerated power.”196 Moreover, be the chain clear and unbroken, the challenged
statute need not necessarily be directly linked to a constitutionally enumerated power.197 The
Comstock “statute [18 U.S.C. § 4248] is a ‘necessary and proper’ means of exercising the federal
authority that permits Congress to create federal criminal laws [(to carry into effect its Commerce
Clause power for instance)], to punish their violation, to imprison violators, to provide
appropriately for those imprisoned, and to maintain the security of those who are not imprisoned
but who may be affected by the federal imprisonment of others.”198
The Court, however, warned that its conclusion depended on several factors specific to the case
before it.199 Acting on this suggestion, the Fifth Circuit, sitting en banc, concluded, erroneously
according to the Supreme Court, that SORNA, as applied to Kebodeaux, rested beyond
Congress’s legislative reach.200
Kebodeaux had been convicted by a military court for having sexual relations with a consenting
fifteen-year-old while he was a twenty-one-year-old airman. He was sentenced to six months and
given a bad conduct discharge in 1999. He registered as a sex offender with Texas authorities in
2007. He was convicted for violating Section 2250 in 2008, when he failed to report that he had
relocated from El Paso to San Antonio.201
The Constitution empowers Congress to make rules for the governing and regulation of the armed
forces.202 It also vests Congress with broad implementing authority to enact legislation necessary
and proper to carry into effect this military governance power and the other powers conveyed by
the Constitution.203 The Fifth Circuit believed that, unlike the Comstock statute, the application of
SORNA was insufficiently proximate to a federal custodial interest and was too sweeping in its
conceptual foundation (“[t]hat reasoning opens the door . . . to congressional power over anyone
who was ever convicted of a federal crime of any sort”).204

196 Id. at 133-34 (citing, among others, McCulloch v. Maryland, 4 Wheat. (17 U.S.) 316, 421 (1810); Gonzalez v.
Raich, 545 U.S. 1, 22 (2005)).
197 Id. at 148 (“[W]e must reject respondents’ argument that the Necessary and Proper Clause permits no more than a
single step between an enumerated power and an Act of Congress.”).
198 Id. at 149.
199 Id. (“We take these five considerations together. They include (1) the breadth of the Necessary and Proper Clause,
(2) the long history of federal involvement in this arena, (3) the sound reasons for the statute’s enactment in light of the
Government’s custodial interest in safeguarding the public from dangers posed by those in federal custody, (4) the
statute’s accommodation of state interests, and (5) the statute’s narrow scope. Taken together, these considerations lead
us to conclude that the statute is a ‘necessary and proper’ means of exercising the federal authority that permits
Congress to create federal criminal laws . . . . ”).
200 United States v. Kebodeaux, 687 F.3d 232, 253-54 (5th Cir. 2012), rev’d, 570 U.S. 387 (2013) (Congress lacks the
legislative authority to require under SORNA “a former federal sex offender to register an intrastate change of address
after he has served his sentence and has already been unconditionally released from prison and the military.”).
201 United States v. Kebodeaux, 647 F.3d 137, 138-39 (5th Cir. 2011), vac’d for reh’g en banc, 647 F.3d 605 (5th Cir.
2011), rev’d, 570 U.S. 387 (2013).
202 U.S. CONST. art. I, § 8, cl. 14 (“The Congress shall have Power . . . To make Rules for the Government and
Regulation of the land and naval Forces.”). Some of the analysis that follows was borrowed from a Kebodeaux CRS
Legal Sidebar, CRS, SORNA Clears Constitutional Hurdle.
203 U.S. CONST. art. I, § 8, cl. 18 (“The Congress shall have Power . . . To make all Laws which shall be necessary and
proper for carrying into Execution the foregoing powers, and all other Powers vested by this Constitution in the
Government of the United States, or in any Department or Officer thereof.”).
204 Kebodeaux, 687 F.3d at 244-45 (“In summary, even taking into account ‘the breadth of the Necessary and Proper
Congressional Research Service

30

SORNA: A Legal Analysis of 18 U.S.C. § 2250

Justice Breyer, the author of the Supreme Court’s Kebodeaux majority opinion, provided a two-
fold response.205 First, by operation of SORNA’s predecessor, the Wetterling Act, Kebodeaux’s
registration requirement arose proximate to his release from federal custody. “[A]s of the time of
Kebodeaux’s offense, conviction and release from federal custody, these Wetterling Act
provisions applied to Kebodeaux and imposed upon him registration requirements very similar to
those that SORNA later imposed.”206 Second, “[n]o one here claim[ed] that the Wetterling Act, as
applied to military sex offenders like Kebodeaux, falls outside the scope of the Necessary and
Property Clause. And it is difficult to see how anyone could persuasively do so.”207
Perhaps the same might be said of federal sex offenses enacted under Congress’s enumerated
powers other than the military clauses. Yet Chief Justice Roberts in his Kebodeaux concurrence
asserted that, “[t]he fact of a prior federal conviction, by itself, does not give Congress a
freestanding, independent, and perpetual interest in protecting the public from the convict’s
purely intrastate conduct.”208 Nevertheless, a subsequent circuit court opinion concluded that
Congress’s authority under the Necessary and Proper Clause extends to a defendant convicted of
a Commerce Clause-based federal offense who was never unconditionally released from federal
supervision.209 There, the U.S. Court of Appeals for the Tenth Circuit acknowledged the
Kebodeaux concurring views of Chief Justice Roberts and Justice Alito, but observed that, “for
our purposes, the majority opinion binds us, and its analysis does not confine SORNA’s
constitutionality to applications involving only the Military Regulation Clause. Nothing in the
majority opinion isolates the Military Regulation Clause as the sole foundation of congressional
authority in support of SORNA.”210

Clause,’ Comstock, 130 S. Ct. at 1965, SORNA’s registration requirements and criminal penalty for failure to register
as a sex offender, as applied to those, like Kebodeaux, who had already been unconditionally released from federal
custody or supervision at the time Congress sought to regulate them, are not ‘rationally related’ or ‘reasonably adapted’
to Congress’s power to criminalize federal sex offenses to begin with. The statute’s regulation of an individual, after he
has served his sentence and is no longer subject to federal custody or supervision, solely because he once committed a
federal crime, (1) is novel and unprecedented despite over 200 years of federal criminal law, (2) is not ‘reasonably
adapted’ to the government’s custodial interest in its prisoners or its interest in punishing federal criminals, (3) is
unprotective of states’ sovereign interest over what intrastate conduct to criminalize within their own borders, and (4) is
sweeping in the scope of its reasoning.”).
205 United States v. Kebodeaux, 570 U.S. 387 (2013).
206 Id. at 393.
207 Id. at 393-94. See also United States v. Coppock, 765 F.3d 921, 924-25 (8th Cir. 2014); United States v. Brunner,
726 F.3d 299, 303 (2d Cir. 2013).
208 Kebodeaux, 570 U.S. at 400 (Roberts, Ch. J., concurring); Justice Alito also concurred only in the judgment, id. at
403 (Alito, J., concurring).
209 United States v. Brune, 767 F.3d 1009, 1016-17 (10th Cir. 2014).
210 Id. See also United States v. Thompson, 811 F.3d 717, 723 & n.9 (5th Cir. 2016) (“He claims that the Necessary and
Proper Clause of the U.S. Constitution does not authorize Congress to criminalize his ‘purely intrastate conduct’—
namely, relocating from one city in Texas to another city in Texas without updating his sex offender registration.
According to Thompson, Congress may only criminalize a sex offender’s intrastate conduct if the defendant either
(1) ‘served in the armed forces’ or (2) committed an offense on ‘federal property.’ Thompson does not fall into either
of these categories. Thus, claims Thompson, the district court should have dismissed the indictment…. Thompson’s
constitutional challenge is meritless. The Courts of Appeals have repeatedly upheld SORNA’s registration and penalty
provisions under the Necessary and Proper Clause, even when the defendant neither served in the military, nor
committed an offense or lived on federal property, nor moved within interstate or foreign commerce.”) (collecting
cases).
Congressional Research Service

31

SORNA: A Legal Analysis of 18 U.S.C. § 2250

Separation of Powers: Non-Delegation
The first section of the first article of the Constitution declares that “[a]ll legislative Powers
herein granted shall be vested in a Congress of the United States.”211 This language means that
Congress “may not transfer to another branch ‘powers which are strictly and exclusively
legislative.’”212 This non-delegation doctrine, however, does not prevent Congress from
delegating the task of filling in the details of its legislative handiwork, as long as it provides
“intelligent principles” to direct the effectuation of its legislative will.”213 In Reynolds, the
Supreme Court read SORNA to “require[] the Attorney General to apply SORNA to all pre-Act
offenders as soon as feasible.”214 The question later in Gundy was whether “Congress ma[de] an
impermissible delegation when it instructed the Attorney General to apply SORNA’s registration
requirements to pre-Act offenders as soon as feasible?”215 For a majority of the Court, “under
[the] Court’s long-established law, that question is easy, its answer is no.”216 Similarly, the U.S.
Court of Appeals for the Second Circuit concluded “that the Secretary [of Defense]’s discretion in
designating certain military offenses as sex offenses under § 20911(5)(A)(iv) [of SORNA] has
been clearly and intelligibly limited by Congress.”217

211 U.S. CONST. art. I, § 1; see generally, Cong. Research Serv., The Constitution of the United States of America:
Analysis and Interpretation
, S. DOC. NO. 112-9, https://constitution.congress.gov/browse/essay/artI-S1-1-
1/ALDE_00000009/.
212 Gundy v United States, 139 S. Ct. 2116, 2123 (2019) (quoting Wayman v. Southard, 23 U.S. (10 Wheat.) 1, 42-43
(1825)); see also Panama Refining Co. v. Ryan, 293 U.S. 388, 421 (1935) (“Congress manifestly is not permitted to
abdicate or to transfer to others the essential legislative functions with which it is [constitutionally] vested.”); A.L.A.
Schechter Poultry Corp. v. United States, 295 U.S. 495, 529 (1935).
213 Gundy, 139 S. Ct. at 2123 (“So we have held, time and again, that a statutory delegation is constitutional as long as
Congress ‘lay[s] down by legislative act an intelligible principle to which the person or body authorized to [exercise the
delegated authority is directed to conform.’” (quoting Mistretta v. United States, 488 U.S. 361, 372 (1989))); see also
Hampton & Co. v. United States, 276 U.S. 294, 409 (1928) (“If Congress shall lay down by legislative act an
intelligible principle to which the person or body authorized to [perform the delegated task] is directed to conform,
such legislative action is not a forbidden delegation of legislative power.”); see also Am. Power Co. v. SEC, 329 U.S.
90, 105 (1946) (“The legislative process would frequently bog down if Congress were constitutionally required to
appraise before-hand the myriad situations to which it wishes a particular policy to be applied and to formulate specific
rules for each situation. Necessity therefore fixes a point beyond which it is unreasonable and impracticable to compel
Congress to prescribe detailed rules; it then becomes constitutionally sufficient if Congress clearly delineates the
general policy, the public agency which is to apply it, and the boundaries of this delegated authority.”); Whitman v.
Am. Trucking Ass’ns, Inc., 531 U.S. 457, 474-75 (2001) (“The scope of discretion §109(b)(1) allows is in fact well
within the outer limits of our nondelegation precedents. In the history of the Court we have found the requisite
‘intelligible principle’ lacking in only two statutes, one of which provided literally no guidance for the exercise of
discretion, and the other of which conferred authority to regulate the entire economy on the basis of no more precise a
standard than stimulating the economy by assuring ‘fair competition.’. . . . [W]e have ‘almost never felt qualified to
second-guess Congress regarding the permissible degree of policy judgment that can be left to those executing or
applying the law.’”).
214 Reynolds v. United States, 565 U.S. 432, 442-43 (2012) (emphasis added).
215 Gundy, 139 S. Ct. at 2129.
216 Id. Justice Kagan wrote the opinion for the Court joined by three colleagues; Justice Alito concurred in the
judgment, id. at 2132 (“Because I cannot say that the statute lacks a discernible standard that is adequate under the
approach this Court has taken for many years, I vote to affirm.”); Justice Gorsuch, joined by the Chief Justice and
Justice Thomas, dissented, id. at 2131. Justice Kavanaugh took no part, id. at 2116.
217 United States v. Mingo, 964 F.3d 134, 138-39 (2d Cir. 2020) (rejecting nondelegation doctrine argument).
Congressional Research Service

32

SORNA: A Legal Analysis of 18 U.S.C. § 2250

Attachments
18 U.S.C. § 2250 (text)
Failure to register
(a) In General.-Whoever-
(1) is required to register under the Sex Offender Registration and Notification Act;
(2)(A) is a sex offender as defined for the purposes of the Sex Offender Registration and Notification
Act by reason of a conviction under Federal law (including the Uniform Code of Military Justice), the law
of the District of Columbia, Indian tribal law, or the law of any territory or possession of the United States;
or
(B) travels in interstate or foreign commerce, or enters or leaves, or resides in, Indian country; and
(3) knowingly fails to register or update a registration as required by the Sex Offender Registration and
Notification Act;
shall be fined under this title or imprisoned not more than 10 years, or both.

(b) International Travel Reporting Violations.-Whoever-
(1) is required to register under the Sex Offender Registration and Notification Act (42 U.S.C. §§16901
et seq.) [now 34 U.S.C. §§ 20901et sec.]; 1
(2) knowingly fails to provide information required by the Sex Offender Registration and Notification
Act relating to intended travel in foreign commerce; and
(3) engages or attempts to engage in the intended travel in foreign commerce;
shall be fined under this title, imprisoned not more than 10 years, or both.

(c) Affirmative Defense.-In a prosecution for a violation under subsection (a) or (b), it is an affirmative
defense that-
(1) uncontrollable circumstances prevented the individual from complying;
(2) the individual did not contribute to the creation of such circumstances in reckless disregard of the
requirement to comply; and
(3) the individual complied as soon as such circumstances ceased to exist.

(d) Crime of Violence.-
(1) In general.-An individual described in subsection (a) or (b) who commits a crime of violence under
Federal law (including the Uniform Code of Military Justice), the law of the District of Columbia, Indian
tribal law, or the law of any territory or possession of the United States shall be imprisoned for not less than
5 years and not more than 30 years.
(2) Additional punishment.-The punishment provided in paragraph (1) shall be in addition and
consecutive to the punishment provided for the violation described in subsection (a) or (b).
Principal State SORNA Statutes (citations)
ALA. CODE §§ 15-20a-1 to 15-20a-48;
ALASKA STAT. §§ 12.63.101 to 12.63.100;
ARIZ. REV. STAT. ANN. §§ 13-3821 to 13-3829;
ARK. CODE ANN. §§ 12-12-901 to 12-12-930;
CAL. PENAL CODE §§ 290 to 290.94;
COLO. REV. STAT. ANN. §§ 16-22-101 to 16-22-115 (Millard v. Rankin, 265 F. Supp. 3d 1211 (D. Colo. 2017) (holding
unconstitutional as applied));
CONN. GEN. STAT. ANN. §§ 54-250 to 54-261;
DEL. CODE ANN. tit. 11, §§ 4120 to 4123;
FLA. STAT. ANN. §§ 943.0435 to 943.0436;
Congressional Research Service

33

SORNA: A Legal Analysis of 18 U.S.C. § 2250

GA. CODE ANN. §§ 42-1-12 to 42-1-19;
HAW. REV. STAT. §§ 846E-1 to 846E-10;
IDAHO CODE §§ 18-8301 to 18-8331;
730 ILL. COMP. LAWS ANN. §§ 150/1 to 150/12;
IND. CODE ANN. §§ 11-8-8-0.2 to 11-8-8-23;
IOWA CODE ANN. §§ 692a.101 to 692a.130;
KAN. STAT. ANN. § 22-4901 to 22-4913;
KY. REV. STAT. ANN. §§ 17.500 to 17.580;
LA. REV. STAT. ANN. §§ 15:540 to 15:553;
ME. REV. STAT. ANN. tit. 34-A, §§ 11201 to 11256;
MD. CODE ANN. CRIM. PRO. §§ 11-701 to 11-727;
MASS. GEN. LAWS ANN. ch. 6, §§ 178c to 178q;
MICH. COMP. LAWS ANN. §§ 28.721 to 28.735 (Doe #1-5 v. Snyder, 834 F.3d 696 (6th Cir. 2016) (holding retroactive
application unconstitutional));
MINN. STAT. ANN. §§ 243.166 to 243.167;
MISS. CODE ANN. §§ 45-33-21 to 45-33-63;
MO. ANN. STAT. §§ 589.400 to 589.425;
MONT. CODE ANN. §§ 46-23-501 to 46-23-520;
NEB. REV. STAT. §§ 29-4001 to 29-4014;
NEV. REV. STAT. §§ 179d.010 to 179d.850;
N.H. REV. STAT. ANN. § 651-B:1 to 651-B:12;
N.J. STAT. ANN. §§ 2C:7-1 to 2C:7-23 (In re C.K. 233 N.J. 44, 182 A.3d 917 (N.J. 2020) (holding lifelong registration
requirement for juveniles unconstitutional));
N.M. STAT. ANN. §§ 29-11a-1 to 29-211a-10;
N.Y. CORR. LAW §§ 168 to 168-W;
N.C. GEN. STAT. §§ 14-208.5 to 14-208.45;
N.D. CENT. CODE §§ 12.1-32-15;
OHIO REV. CODE ANN. §§ 2950.01 to 2950.99 (In re Bruce S., 983 N.E.2d 350 (Ohio 2012) (holding retroactive
application unconstitutional));
OKLA. STAT. ANN. tit. 57 §§ 581 to 590.1;
OR. REV. STAT. §§ 163a.005 to 163a.235;
42 PA. STAT. ANN. 9799.10 to 9799.75 (Pennsylvania v. Wood, 208 A.3d 131 (Pa. Super. 2019) and T.S. v. Pa. State
Police, 231 A.3d 103 (Pa. Commw. 2020) (holding retroactive application unconstitutional));
R.I. GEN. LAWS §§ 11-37.1-1 to 11-37.1-21;
S.C. CODE ANN. §§ 23-3-400 to 23-3-555;
S.D. COD. LAWS ANN. §§ 22-24b-1 to 22-24b-37;
TENN. CODE ANN. §§ 40-39-201 to 40-39-218 (Doe v. Lee, 518 F. Supp. 3d 1157 (M.D. Tenn.) (holding retroactive
application unconstitutional);
TEX. CODE OF CRIM. PRO. arts. 62.001 to 62.408;
UTAH CODE ANN. §§ 77-41-101 to 77-41-113;
VT. STAT. ANN. tit. 13, §§ 5401 to 5416;
VA. CODE ANN. §§ 9.1-900 to 9.1-923
WASH. REV. CODE ANN. §§ 9A.44.128 to 9A.44.148;
W. VA. CODE §§ 15-12-1 to 15-12-10;
WIS. STAT. ANN. §§ 301.45 to 301.50;
WYO. STAT. §§ 7-19-301 to 7-19-310.

Congressional Research Service

34

SORNA: A Legal Analysis of 18 U.S.C. § 2250


Author Information

Charles Doyle

Senior Specialist in American Public Law



Disclaimer
This document was prepared by the Congressional Research Service (CRS). CRS serves as nonpartisan
shared staff to congressional committees and Members of Congress. It operates solely at the behest of and
under the direction of Congress. Information in a CRS Report should not be relied upon for purposes other
than public understanding of information that has been provided by CRS to Members of Congress in
connection with CRS’s institutional role. CRS Reports, as a work of the United States Government, are not
subject to copyright protection in the United States. Any CRS Report may be reproduced and distributed in
its entirety without permission from CRS. However, as a CRS Report may include copyrighted images or
material from a third party, you may need to obtain the permission of the copyright holder if you wish to
copy or otherwise use copyrighted material.

Congressional Research Service
R42692 · VERSION 10 · UPDATED
35