The Vacancies Act: A Legal Overview
Updated May 28, 2021
Congressional Research Service
https://crsreports.congress.gov
R44997

The Vacancies Act: A Legal Overview

Summary
The Federal Vacancies Reform Act of 1998 (Vacancies Act) general y provides the exclusive
means by which a government employee may temporarily perform the functions and duties of a
vacant advice-and-consent position in an executive agency. Unless an acting officer is serving in
compliance with the Vacancies Act, any attempt to perform the functions and duties of that office
wil have no force or effect.
The Vacancies Act limits a government employee’s ability to serve as an acting officer in two
primary ways. First, the Vacancies Act provides that only three classes of people may serve
temporarily in an advice-and-consent position. As a default rule, the first assistant to a position
automatical y becomes the acting officer. Alternatively, the President may direct either a senior
official of the agency or a person serving in any other advice-and-consent position to serve as the
acting officer. Second, the Vacancies Act limits the length of time a person may serve as acting
officer: a person may serve either (1) for a limited time period running from the date that the
vacancy occurred or (2) during the pendency of a nomination to that office, with some extensions
if the nomination is rejected, withdrawn, or returned. The Vacancies Act is primarily enforced
when a person who has been injured by an agency’s action chal enges the action based on the
theory that it was taken in contravention of the Act.
There are, however, a few key limitations on the scope of the Vacancies Act. Notably, the
Vacancies Act has largely been interpreted to govern the ability of a person to perform only those
functions and duties of an office that are nondelegable. Unless a statute or regulation expressly
specifies that a duty must be performed by the absent officer, that duty may likely be delegated to
another government employee. In other words, delegable job responsibilities are outside the
purview of the Vacancies Act. In addition, if another statute expressly authorizes acting service,
that other statute may render the Vacancies Act nonexclusive, or possibly even inapplicable.
This report first describes how the Vacancies Act operates and outlines its scope, identifying
when the Vacancies Act applies to a given office and which offices are exempt from its
provisions. The report then explains who may serve as an acting officer and for how long,
focusing on the limitations the Vacancies Act places on acting service. Next, the report discusses
the Vacancies Act’s enforcement mechanisms. Final y, the report turns to evolving legal issues
regarding the application of the Vacancies Act, including a discussion of how other federal laws
may limit the Act’s reach. Specifical y, the report concludes by examining the interaction of the
Vacancies Act with agency-specific statutes, the ability to delegate the duties of a vacant office,
and constitutional considerations.
Congressional Research Service

The Vacancies Act: A Legal Overview

Background
The Appointments Clause of the Constitution general y requires high-level “officers of the United
States” to be appointed through nomination by the President, with the advice and consent of the
Senate.1 Appointment to these advice-and-consent positions can be a lengthy process, and officers
sometimes unexpectedly vacate offices, whether by resignation, death, or other absence, leaving
before a successor has been chosen.2 In particular, there are often a large number of vacancies
during a presidential transition, when a new President seeks to instal new officers in important
executive positions.3 In the case of such a vacancy, Congress has long provided that individuals
who were not appointed to that office may temporarily perform the functions of that office.4
Usual y, where a statute authorizes acting service, courts have said that “an acting officer is
vested with the same authority that could be exercised by the officer for whom he acts.”5
To serve as an acting officer for an advice-and-consent position, a government officer or
employee general y must be authorized to perform the duties of a vacant office by the Federal
Vacancies Reform Act of 1998 (Vacancies Act).6 The Vacancies Act al ows only certain classes of
employees to serve as an acting officer for an advice-and-consent position,7 and specifies that
they may serve for only a limited period.8 If a covered acting officer’s service is not authorized by
the Vacancies Act, any attempt by that officer to perform a “function or duty” of a vacant office
has “no force or effect.”9
This report first describes how the Vacancies Act operates and outlines its scope, identifying
when the Vacancies Act applies to a given office and which offices are exempt from its
provisions. The report then explains who may serve as an acting officer and for how long,
focusing on the limitations the Vacancies Act places on acting service. Next, the report discusses
how the Vacancies Act is enforced. Final y, the report turns to evolving legal issues regarding the
application of the Vacancies Act, including a discussion of how other federal laws may limit the
Act’s reach. Specifical y, the report concludes by examining the interaction of the Vacancies Act

1 U.S. CONST. art. II, § 2, cl. 2 (“[T he President] shall nominate, and by and with the Advice and Consent of the Senate,
shall appoint . . . all other Officers of the United States, whose Appointments are not herein otherwise provided for, and
which shall be established by Law: but the Congress may by Law vest the Appointment of such inferior Officers, as
they think proper, in the President alone, in the Courts of Law, or in the Heads of Departments. ”). If the vacancy exists
“during the Recess of the Senate,” the Constitution also allows the President to appoint an officer to serve until “ the
End of [the Senate’s] next Session.” U.S. CONST. art. II, § 2. See generally CRS Report RS21308, Recess
Appointm ents: Frequently Asked Questions, by Henry B. Hogue.
2 See generally Anne Joseph O’Connell, Actings, 120 COLUM. L. REV. 613, 638–48 (2020) (summarizing previous
empirical research on executive branch vacancies and providing new data on Cabinet -level vacancies).
3 See, e.g., CRS Insight IN11541, Presidential Transitions: Executive Branch Political Appointment Status, by Henry
B. Hogue.
4 See, e.g., Doolin Sec. Sav. Bank v. Office of T hrift Supervision, 139 F.3d 203, 209 –10 (D.C. Cir. 1998) (describing
vacancies legislation dating back to 1792).
5 In re Grand Jury Investigation, 916 F.3d 1047, 1055 (D.C. Cir. 2019). Cf. Nw. Immigrant Rights Project v. U.S.
Citizenship & Immigr. Servs., No. 19-3283, 2020 U.S. Dist. LEXIS 187410 , at *60 (D.D.C. Oct. 9, 2020) (holding that
a statute authorizing “the Secretary” of the Interior to designate an order of succession “to serve as Acting Secretary”
did not authorize an acting Secretary to change the order of succession).
6 5 U.S.C. §§ 3345–3349c.
7 Id. § 3345.
8 Id. §§ 3346, 3349a.
9 Id. § 3348(d).
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with agency-specific statutes, the ability to delegate the duties of a vacant office, and
constitutional considerations.
Scope and Operation of the Vacancies Act
The Vacancies Act general y provides “the exclusive means for temporarily authorizing an acting
official to perform the functions and duties of any office of an Executive agency . . . for which
appointment is required to be made by the President, by and with the advice and consent of the
Senate.”10 As discussed in more detail below, the Vacancies Act may sometimes operate in
tandem with agency-specific statutes that provide for a specific official to serve in the case of a
vacancy.11 The Vacancies Act applies if an officer serving in an advice-and-consent position in the
executive branch “dies, resigns, or is otherwise unable to perform the functions and duties of the
office.”12 Some have suggested that the Vacancies Act may not apply in the case of a presidential
removal from office13 or in the case of a temporary rather than permanent absence,14 but the
phrase “unable to perform the functions and duties of the office” appears relatively broad on its
face, and the Vacancies Act does not expressly exclude firings or temporary absences.15
Although some positions are excluded from the Vacancies Act,16 ordinarily a person may not
temporarily perform “the functions and duties” of a vacant advice-and-consent position unless
that service comports with the Vacancies Act.17 The Vacancies Act specifies that a “function or
duty” is one that, by statute or regulation, must be performed by the officer in question.18 Section
334819 provides that, “unless an officer or employee is performing the functions and duties [of an

10 Id. § 3347(a).
11 See infra “Exclusivity of the Vacancies Act .”
12 5 U.S.C. §§ 3345, 3348. T he heads of executive agencies are required to report any vacancies, along with
information about acting officers and nominations, “ to the Comptroller General of the United States and to each House
of Congress.” Id. § 3349(a).
13 See, e.g., United States v. Valencia, No. 5:17-CR-882-DAE, 2018 U.S. Dist. LEXIS 200564, at *11–12 (W.D. T ex.
Nov. 27, 2018); Ben Miller-Gootnick, Boundaries of the Federal Vacancies Act, 56 HARV. J. ON LEGIS. 459, 460
(2019). But cf. O’Connell, supra note 2, at 674 (noting textual, legislative history, and policy arguments “ weigh[ing] in
favor of the Vacancies Act applying to firings”).
14 Cf., e.g., English v. T rump, 279 F. Supp. 3d 307, 322 (D.D.C. 2018) (noting party’s argument that agency-specific
statute referring to “absence or unavailability” includes only vacancies resulting from “temporary” conditions,
opposing this language to that of the Vacancies Act); In re Grand Jury Investigation, 916 F.3d 1047, 1055–56 (D.C.
Cir. 2019) (concluding that an agency-specific statute authorizing acting service in the event of the Attorney General’s
“absence or disability” could apply when the Attorney General recused himself from certain investigations, because the
“single-issue recusal” qualified as “a ‘disability’ that created a vacancy”).
15 T he Vacancies Act expressly refers to at least one form of temporary absence: sickness. See 5 U.S.C. § 3346
(providing that time limits on acting service do not app ly to “ a vacancy caused by sickness”).
16 See infra “Which Offices?”
17 See 5 U.S.C. §§ 3347–3348.
18 Id. § 3348(a)(2); see infra “What Are the “Functions and Duties” of an Office?”
19 T his report refers to specific sections of the Vacancies Act using their location in T itle 5 of th e U.S. Code, rather than
referring to sections of Pub. L. No. 105-277, 112 Stat. 2681-611 (1998).
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office] in accordance with” the Act,20 “the office shal remain vacant.”21 If there is no acting
officer serving in compliance with the Vacancies Act, then general y “only the head of [an
agency] may perform” the functions and duties of that vacant office.22 As a result, Section 3348
usual y al ows three types of people to perform the functions and duties of an advice-and-consent
office when it is vacant: the agency head, a person complying with the Vacancies Act, or a person
complying with another statute that al ows acting service.23 Section 3348 further provides that “an
action taken by any person who” is not complying with the Vacancies Act “in the performance of
any function or duty of a vacant office . . . shal have no force or effect.”24 The Vacancies Act also
states that an agency may not ratify any acts taken in violation of the statute.25 These enforcement
mechanisms are discussed in more detail below.26
Which Offices?
The Vacancies Act general y applies to advice-and-consent positions in executive agencies.27 The
term “Executive agency”28 is defined broadly in Title 5 of the U.S. Code to mean “an Executive
department, a Government corporation, [or] an independent establishment.”29 However, the
Vacancies Act explicitly excludes certain offices altogether.30 First, the Vacancies Act does not
apply to officers of “the Government Accountability Office” (GAO).31 Second, a distinct
provision states that the Vacancies Act does not apply to (1) a member of a multimember board

20 Specifically, the statute requires compliance with Sections 3345, 3346, and 3347. See 5 U.S.C. § 3348(b). Section
3345 sets out three classes of people who may serve as acting officers, id. § 3345; Section 3346 prescribes time
limitations for acting service, id. § 3346; and Section 3347 provides that the Vacancies Act is exclusive unless another
statutory provision expressly allows a person to “ perform the functions and duties of a specified office temporarily in
an acting capacity,” id. § 3347(1). T hese provisions are explained in more detail infra, “ Vacancies Act Limitations on
Acting Service,” and “ Exclusivity of the Vacancies Act .”
21 5 U.S.C. § 3348(b).
22 Id. T his provision allowing the head of the agency to perform functions and duties of the vacant office does not apply
to an office that is “ the office of the head of an Executive Agency.” Id. § 3348(b)(2). Accordingly, if an office
designated vacant under this provision is that of the agency head, it appears likely that no one can temporarily perform
the functions and duties of that office under the Vacancies Act. See S. REP . NO. 105-250, at 19 (1998) (“ If the head of
the agency position is vacant for more than 150 days without a nomination being sent to the Senate, the office is to
remain vacant.”).
23 5 U.S.C. § 3348(b).
24 Id. § 3348(d)(1). 5 U.S.C. § 3348(a)(1) defines “action” by reference to 5 U.S.C. § 551(13), which in turn defines
“agency action” as “ the whole or a part of an agency rule, order, license, sanction, relief, or the equivalent or denial
thereof, or failure to act .”
25 Id. § 3348(d)(2).
26 See infra “Consequences of Violating the Vacancies Act .”
27 5 U.S.C. § 3347.
28 Id.
29 See id. § 105 (defining “executive agency” for purposes of T itle 5 of the U.S. Code); Applicability of the Fed.
Vacancies Reform Act to Vacancies at the Int’l Monetary Fund and the World Bank, 24 Op. O.L.C. 58, 61 (2000)
(using 5 U.S.C. § 105 to define the term “executive agency,” as used in the Vacancies Act).
30 5 U.S.C. §§ 3345, 3348.
31 Specifically, the general provisions making the Vacancies Act applicable to officers of executive agencies specify
that the relevant executive agencies “includ[e] the Executive Office of the President,” but exclude the GAO. Id.
§§ 3345(a), 3347(a), 3348(b), 3349(a). Although the GAO is generally considered to be a legislative agency rather than
an executive branch agency, see, e.g., Colonial Press Int’l, Inc. v. United States, 788 F.3d 1350, 1357 (Fed. Cir. 2015),
it is expressly excluded from the Vacancies Act —likely because another statute, 5 U.S.C. § 104, expressly identifies
the GAO as an “independent establishment” falling within the generally applicable definition of “executive agency”
provided in 5 U.S.C. § 105.
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that “governs an independent establishment or Government corporation”; (2) a “commissioner of
the Federal Energy Regulatory Commission”; (3) a “member of the Surface Transportation
Board”; or (4) a federal judge serving in “a court constituted under article I of the United States
Constitution.”32
Additional y, while not excluded from the other requirements of the Vacancies Act,33 certain
offices are exempt from the provision al owing only agency heads to perform the duties of a
vacant office and the provision that renders noncompliant actions void.34 Specifical y, Section
3348(e) states that “this section”—Section 3348—“shal not apply to”:
(1) the General Counsel of the National Labor Relations Board;
(2) the General Counsel of the Federal Labor Relations Authority;
(3) any Inspector General appointed by the President, by and with the advice and consent
of the Senate;
(4) any Chief Financial Officer appointed by the President, by and with the advice and
consent of the Senate; or
(5) an office of an Executive agency (including the Executive Office of the President, and
other than the Government Accountability Office) if a statutory provision expressly
prohibits the head of the Executive agency from performing the functions and duties of
such office.35
The legislative history of the Vacancies Act sheds some light on the purpose of this exemption,
suggesting that Congress sought to exclude these “unusual positions” from Section 3348 because
these officials are meant to be “independent” of the commission or agency in which they serve.36
The Senate report accompanying the Act suggests that for at least some of these positions,
Congress intended “to separate the official who would investigate and charge potential violations
of the underlying regulatory statute from the officials who would determine whether that statute
had actual y been violated.”37 Al owing the head of the agency to perform the nondelegable duties
of these positions would undermine the independence of these positions.38
As discussed in more detail below, it is not entirely clear what the consequences are if an acting
officer in one of these exempt positions violates the Vacancies Act.39 Because Section 3348 does
not apply to those positions, it appears that the law would not render noncompliant actions void.40
Instead, a court might conclude that any noncompliant acts are merely voidable—a legal

32 5 U.S.C. § 3349c. T his first category would likely include, for example, members of the National Credit Union
Administration Board, a multimember board that manages “an independent agency.” 12 U.S.C. § 1752a.
33 Id. § 3348(e); NLRB v. SW Gen., Inc., 137 S. Ct. 929, 944 (2017) (concluding 5 U.S.C. § 3345(b)(1) applied to
Acting General Counsel of National Labor Relations Board and holding his service violated the Vacancies Act).
34 5 U.S.C. § 3348(b), (d), (e).
35 Id. § 3348(e).
36 S. REP. NO. 105-250, at 20 (1998). T his portion of the report discusses the exemptions for General Counsels, but the
report offers distinct, but substantively similar, explanations for exempting the “agency inspectors general.” See id. T he
report does not specifically discuss sub-subsection (4), containing the exemption for Chief Financial Officers, see id.,
because this provision was added after the committee’s consideration of the bill, 144 CONG. REC. S12823 (daily ed.
Oct. 21, 1998) (statement of Sen. Fred T hompson).
37 S. REP. NO. 105-250, at 20 (1998).
38 Id.
39 Infra “Consequences of Violating the Vacancies Act .”
40 See 5 U.S.C. § 3348(d), (e).
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distinction discussed below—or could conclude that even if these officers violate the Vacancies
Act, that law wil not invalidate their actions.41
Final y, the Vacancies Act contemplates that other statutes may, under limited circumstances,
either supplement or supersede its provisions.42 Section 3347 provides that the Vacancies Act is
exclusive unless “a statutory provision expressly” authorizes “an officer or employee to perform
the functions and duties of a specified office temporarily in an acting capacity.”43 However,
Section 3347 states that a general statute authorizing the head of an executive agency “to delegate
duties statutorily vested in that agency head to, or to reassign duties among, officers or employees
of such Executive agency” wil not supersede the limitations of the Vacancies Act on acting
service.44 For instance, 28 U.S.C. § 510, which states general y that the Attorney General may
authorize any other employee to perform any function of the Attorney General, likely would not
render the Vacancies Act nonexclusive.45 To supplement or supersede the Vacancies Act, a statute
must “expressly” authorize “acting” service.46 Under certain circumstances, it might be the case
that more than one statute governs acting service in a given office,47 and that a person could
lawfully serve as an acting officer under either statute.48 This issue is discussed in more detail,
below.49

41 See SW Gen., Inc. v. NLRB, 796 F.3d 67, 79 (D.C. Cir. 2015).
42 See 5 U.S.C. §§ 3347, 3348(b). In addition, the Vacancies Act does not apply if “ the President makes an appointment
to fill a vacancy in such office during the recess of the Senate pursuant to clause 3 of section 2 of article II of the
United States Constitution.” Id. § 3347(a)(2).
43 Id. § 3347(a)(1). 5 U.S.C. § 3347(a)(1)(A) refers to statutes that authorize “ the President, a court, or the head of an
Executive department, to designate” acting officers, while 5 U.S.C. § 3347(a)(1)(B) refers to statutes that themselves
designate acting officers. See, e.g., 49 U.S.C. § 102(e) (creating assistant secretary and general counsel positions and
authorizing those officials to serve as acting officials).
44 5 U.S.C. § 3347(b). Legislative history suggests that Congress intended this provision to definitively counter the
Department of Justice’s assertion that “its organic statute’s ‘vesting and delegation’ provision” rendered the Vacancies
Act’s limitations inapplicable. 144 CONG. REC. S11021 (daily ed. Sept. 28, 1998) (statement of Sen. Fred T hompson).
See also id. at S11025 (statement of Sen. Robert Byrd) (“ Most importantly . . . it is a bill which will, once and for all,
put an end to these ridiculous, specious, fallacious arguments that the Vacancies Act is nothing more than an annoyance
to be brushed aside.”); id. at S11026 (statement of Sen. Carl Levin) (“[T he bill] would make clear that the act is the
sole legal statutory authority for the temporary filling of positions pending confirmation. . . . I think in the opinion of
probably most Senators that loophole does not exist. But, nonetheless, whether it is a real one or an imaginary one, it
has been used by administrations in order to have people temporarily fill positions pending confirmation for just simply
too long a period of time, which undermines the Senate’s advice and consent authority.”); id. at S11028 (statement of
Sen. Strom T hurmond) (“[T]he Attorney General’s misguided interpretation of the current Vacancies Act . . . .
practically interprets the Act out of existence.”); 144 CONG. REC. S12823 (daily ed. Oct. 21, 1998) (statement of Sen.
Fred T hompson) (“[T]he organic statutes of the Cabinet departments do not qualify as a statutory ex ception to this
legislation’s exclusivity in governing the appointment of temporary officers.”).
45 See 5 U.S.C. § 3347(a)(1).
46 Id. T he committee report on the 1998 bill noted that the bill would “retain[] existing statutes” that contained such an
express authorization. S. REP . NO. 105-250, at 15–16 (1998).
47 See, e.g., Hooks ex rel. NLRB v. Kitsap T enant Support Servs., 816 F.3d 550, 556 (9th Cir. 2016).
48 See United States v. Lucido, 373 F. Supp. 1142, 1150 (E.D. Mich. 1974) (“[U]nder both 28 U.S.C. § 508 and 5
U.S.C. § 3345, the Deputy Attorney General assumes the duties of the vacant position. ”). In Lucido, a district court
upheld the actions of an acting officer who had exceeded the time limitations of an older version of the Vacancies Act,
holding that a separate statute, 28 U.S.C. § 508(a), had authorized him to assume the duties of the Attorney General
while acting in his position as Deputy Attorney General. Id. at 1151.
49 See infra “Exclusivity of the Vacancies Act .”
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The Vacancies Act also makes certain exemptions for holdover provisions in other statutes:
Section 3349b provides that the Vacancies Act “shal not be construed to affect any statute that
authorizes a person to continue to serve in any office” after the expiration of that person’s term.50
What Are the “Functions and Duties” of an Office?
The Vacancies Act limits an officer or employee’s ability to perform “the functions and duties” of
a vacant advice-and-consent office.51 Section 3348 contains a definition providing that a
“function or duty” must be (1) established either by statute or regulation and (2) “required” by
that statute or regulation “to be performed by the applicable officer (and only that officer).”52 The
interpretation of “function or duty” has significant implications for an agency’s ability to delegate
the duties of a vacant office and for determining the consequences of violating the Vacancies Act.
For example, if an official performs a duty that is not within the scope of this definition, then
even if that official’s service did not comply with the Vacancies Act, Section 3348’s enforcement
provisions wil not apply to invalidate the duty.53 The issues of enforcement and delegation are
discussed in more detail, below.54
Under the statutory definition, if the function or duty is established by regulation, that regulation
must have been “in effect at any time during the 180-day period preceding the date on which the
vacancy occurs.”55 This 180-day provision has been referred to as a “lookback” provision that
requires the agency to assign or reassign any regulatory duties prior to the vacancy.56 This
provision suggests that a regulatory duty fal s outside this definition if it is not assigned to an
office in the lookback period, and the Vacancies Act may not apply if an agency attempts to
assign a new duty to a vacant office after the vacancy occurs.57 Relying on legislative history, the
GAO has said this provision was also intended “to prevent agencies from re-issuing regulations

50 5 U.S.C. § 3349b. Additionally, Section 3345, which limits the types of people who can serve as an acting officer,
includes a special provision allowing the President to direct certain officers who serve a fixed term in an executive
department to continue to serve as an acting officer. See infra note 103; 5 U.S.C. § 3345(c)(1). See also Inapplicability
of the Fed. Vacancies Reform Act’s Reporting Requirements when PAS Officers Serve Un der Statutory Holdover
Provisions, 23 Op. O.L.C. 178, 179 (1999) (concluding “there is no vacancy to be reported under the Act when a PAS
officer continues service under a holdover provision,” but noting that this conclusion is not entirely clear).
51 5 U.S.C. §§ 3345(a), 3348(b), (d).
52 Id. § 3348(a)(2). T he definition of “function or duty” is found in 5 U.S.C. § 3348 and applies only to “this section” of
the Vacancies Act. However, given that Section 3348 creates the Act’s enforcement mechanisms, the defin ition is
effectively controlling for the rest of the Act, as well. In other words, even if the language “ functions and duties” as
used in Sections 3345 and 3347 were interpreted to mean something different than the text used in Section 3348, a duty
performed by a noncompliant official will have “ no force or effect” only if it satisfies the definition in Section 3348.
But cf. Nina Mendelson, L.M.-M. v. Cuccinelli and the Illegality of Delegating Around Vacant Senate-Confirm ed
Offices, YALE J. REG.: NOTICE & COMMENT (Mar. 5, 2020) (arguing that the Vacancies Act’s “ requirements for acting
officers and time limitations on acting service could still be enforced under the Administrative Procedure Act ” even if a
challenged action does not fall under the definition of “ function or duty” used in Section 3348).
53 See, e.g., Guedes v. Bureau of Alcohol, T obacco, Firearms & Explosives, 920 F.3d 1, 12 (D.C. Cir. 2019) (per
curiam).
54 See infra “Consequences of Violating the Vacancies Act ” and “Delegability of Duties.”
55 5 U.S.C. § 3348(a)(2)(B)(ii).
56 See L.M.-M. v. Cuccinelli, 442 F. Supp. 3d 1, 33 (D.D.C. 2020) (discussing “lookback provision”); Guidance on
Application of Fed. Vacancies Reform Act of 1998, 23 Op. O.L.C. 60, 71 (1999) (discussing “look -back provision”);
O’Connell, supra note 2, at 634 (discussing “look-back period”).
57 See S. REP. NO. 105-250, at 18 (1998) (“The bill does not include as duties or functions of the office those duties that
are limited or eliminated by statute after the date 180 days preceding the vacancy.”)
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providing that an office has no exclusive duties,”58 possibly also preventing them from limiting
the covered duties of the vacant office after the vacancy occurs.59
There is relatively little case law clarifying what “functions and duties” are within the scope of
the Vacancies Act—and particularly, what it means for a statute or regulation to “require[]” a duty
to be performed “only” by the applicable officer—but one trial court asserted that there are at
least two ways to interpret this definition.60 In the first interpretation, “functions and duties” could
refer to a more limited category of duties that are not only assigned to one office, but also may not
be delegated to any other official.61 In the second interpretation, the “functions and duties” of a
vacant office could include al the responsibilities that are expressly assigned by statute or
regulation to one particular office and that were not delegated to another office during the
lookback period (even if they could have been).62
Applying the first, narrower interpretation of “functions and duties,” the Vacancies Act has been
described as applying to only the nondelegable functions and duties of a vacant office because a
delegable duty is not a duty that may be performed “only” by the officer in the vacant office.63
One consequence of this interpretation is that temporary officials or subordinate officials may
perform the duties of a vacant office without violating the Vacancies Act, as long as they do so
subject to a lawful delegation.64 Further, under this view, even if a duty has not been delegated, as
long as it is delegable, it wil fal outside the Section 3348 definition.65 A number of courts,66

58 Fed. Vacancies Reform Act of 1998 - Assistant Attorney Gen. for the Office of Legal Counsel, U.S. Dep’t of Justice,
B-310780, 2008 U.S. Comp. Gen. LEXIS 101, at *10 n.11 (Comp. Gen. June 13, 2008).
59 See S. REP. NO. 105-250, at 2 (1998) (“ Such duties include duties established by regulation for the officer during any
part of the 180 days before the vacancy occurred, notwithstanding subsequent regulations that p urported to limit those
duties.”).
60 L.M.-M. v. Cuccinelli, 442 F. Supp. 3d 1, 31 (D.D.C. 2020).
61 See id. at 31–32.
62 See id. at 31.
63 See, e.g., S. REP. NO. 105-250, at 18 (1998) (“The functions or duties of the office that can be performed only by the
head of the executive agency are therefore defined as the non -delegable functions or duties of the officer . . . .”). Cf.,
e.g., Crawford-Hall v. United States, 394 F. Supp. 3d 1122, 1133 (C.D. Cal. 2019) (referring to an office’s “ exclusive”
duties).
64 See, e.g., ANNE JOSEPH O’CONNELL, ADMIN. CONFERENCE OF THE U.S., ACTING AGENCY OFFICIALS AND
DELEGATIONS OF AUTHORITY 28 (2019) (discussing agency practice of using delegations as a substitute for acting
service under the Vacancies Act).T he legal principles that generally govern courts’ analyses of whether a delegation is
permissible are discussed below. See infra “ Delegability of Duties.” For example, such a delegation will be lawful only
if the power was validly delegated by someone with the authority to do so —which might not be the case if the officer
who formerly possessed those powers left without delegating any responsibilities. See Office of T hrift Supervision v.
Paul, 985 F. Supp. 1465, 1474–75 (S.D. Fla. 1997); see also id. at 1475 n.9 (“ T he Court does not hold that such a
designation could be indefinite, and the Court has no occasion to decide that issue at this time. ”).
65 See infra “Consequences of Violating the Vacancies Act .”
66 E.g., Schaghticoke T ribal Nation v. Kempthorne, 587 F. Supp. 2d 389 , 420–21 (D. Conn. 2008), aff’d, 587 F.3d 132
(2d Cir. 2009). In this case, the Secretary of the Interior delegated all legally delegable duties of a vacant office to an
inferior officer. Id. at 420. One of those duties was the ability to make “ tribal acknowledgment decisions.” Id. T he
Schaghticoke T ribal Nation challenged the inferior officer’s decision not to acknowledge the tribe, arguing that the
officer was unlawfully exercising a function or duty of a vacant office. Id. at 419. T he court considered whether the
authority to make acknowledgement decisions was a nondelegable function and concluded that it was not. Id. at 420–
21. T he court also held that it did not matter that the inferior officer had acted after the time period prescribed by the
Vacancies Act because the Act “sets no time limits on redelegations of nonexclusive duties.” Id. at 421.
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along with the executive branch67 and the Comptroller General,68 have seemingly adopted this
view, concluding that the Vacancies Act applies only to nondelegable duties.
For example, the U.S. Court of Appeals for the District of Columbia Circuit (D.C. Circuit)
adopted this narrower interpretation of Section 3348 in Guedes v. Bureau of Alcohol, Tobacco,
Firearms and Explosives.69 The Court there concluded that a chal enged action taken by an acting
official was not a function or duty encompassed by the Vacancies Act because the relevant action
was delegable.70 The fact that the duty was delegable was determinative, regardless of whether
the duty had in fact been delegated to another official.71
Further supporting this interpretation, the GAO considered in 2008 whether a senior official in
the Department of Justice’s Office of Legal Counsel (OLC), the Principal Deputy Assistant
Attorney General, had violated the Vacancies Act by performing the responsibilities of an absent
officer, the Assistant Attorney General for the OLC.72 The GAO concluded that the principal
deputy had not violated the Vacancies Act because he had merely been performing the duties of
his own position, which included the delegated duties of the vacant office.73 The GAO approved
of this delegation after reviewing the relevant statutes and regulations and concluding that “there
[were] no duties” that could be performed only by the Assistant Attorney General.74 The
Department of Justice has likewise argued that Congress intended to al ow the delegation of
“non-exclusive responsibilities” because Congress “understood” that if only the head of an
agency could perform al of a vacant office’s duties, “the business of the government could be
seriously impaired.”75
By contrast, one trial court concluded in March 2020 that the second, broader interpretation of
“function or duty” described above was more consistent with the operation and purpose of the
Vacancies Act.76 Specifical y, the court said that the narrower reading of “function or duty” was
“at odds” with Congress’s intent to prohibit agency heads from invoking general vesting-and-

67 E.g., Under Secretary of the T reasury for Enforcement, 26 Op. O.L.C. 230, 233–34 (2002).
68 Fed. Vacancies Reform Act of 1998 - Assistant Attorney Gen. for the Office of Legal Counsel, U.S. Dep’t of Justice,
B-310780, 2008 U.S. Comp. Gen. LEXIS 101, at *12–13 (Comp. Gen. June 13, 2008).
69 See Guedes v. Bureau of Alcohol, T obacco, Firearms & Explosives, 920 F.3d 1, 12 (D.C. Cir. 2019) (per c uriam).
70 Id.
71 See id.
72 Fed. Vacancies Reform Act of 1998 - Assistant Attorney Gen. for the Office of Legal Counsel, U.S. Dep’t of Justice,
B-310780, 2008 U.S. Comp. Gen. LEXIS 101, at *7 (Comp. Gen. June 13, 2008). T he Principal Deputy Assistant
Attorney General had performed these responsibilities after the time periods provided by the Vacancies Act had ended.
Id.
73 Id. at *12–13.
74 Id. at *5 (emphasis added). T he GAO noted first that there were “no statutory functions or duties for the position of
Assistant Attorney General for the OLC, either non-delegable or delegable.” Id. at *8. T he GAO then concluded that
although regulations assigned a number of duties to the Assistant Attorney General for the OLC, and specifically vested
that officer with supervisory responsibility, the regulations were not “ sufficiently prescriptive for [the OLC] to
conclude that they assign non-delegable duties.” Id. at *11.
75 Guidance on Application of Fed. Vacancies Reform Act of 1998, 23 Op. O.L.C. 60, 72 (1999).
76 L.M.-M. v. Cuccinelli, 442 F. Supp. 3d 1, 32 (D.D.C. 2020). T he trial court dismissed the D.C. Circuit’s decision in
Guedes essentially by concluding that the statements in that opinion were dicta: “ [T ]he meaning of the vacant -office
provision was neither disputed nor decided in Guedes. Indeed, neither below nor on appeal did the parties dispute
whether the official’s appointment satisfied the [Vacancies Act], . . . nor did the parties contest that, by the time the
dispute reached the D.C. Circuit, the challenged rule had been validly ratified by a properly appointed official . . . .” Id.
at 33 (citations omitted).
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delegation statutes to evade the Vacancies Act.77 One of the Act’s primary purposes was to
prevent the Executive from appointing “officers of the United States”78 without Senate advice and
consent.79 Accordingly, Section 3347 provides that the Vacancies Act is “the exclusive means” to
authorize a person to temporarily perform the duties of a vacant advice-and-consent office, and
specifies that a statute that vests an agency head with the general authority to delegate duties wil
not suffice to override the Vacancies Act.80 At the same time, however, a general vesting-and-
delegation statute likely renders many duties of an office delegable,81 and could permit an agency
head to delegate any delegable responsibilities of a vacant office to another official.82 As a result,
if the responsibilities of a particular advice-and-consent position primarily consist of delegable
duties, a general delegation statute could al ow an agency employee to perform most of that
position’s responsibilities even though that employee was not appointed to that position through
the advice-and-consent process.83 The trial court said that by al owing “the mere existence of . . .
vesting-and-delegation statutes” to “negate” the Vacancies Act’s enforcement mechanisms, the
second reading would be inconsistent with the law’s purpose.84
The court also said that the first reading was supported by the Act’s “lookback” provision
defining “function or duty” to include regulatory duties only if the regulations were in effect
during the 180-day period preceding the vacancy.85 The court stated that this lookback provision
was enacted to prevent agencies from using their general vesting-and-delegation authorities to
circumvent the limits imposed by Vacancies Act.86 In the court’s view, agencies could only “use
their organic authorities to issue rules reassigning duties” if they complied with the lookback
period.87 Thus, under the second view, the “functions and duties” subject to the Vacancies Act
include any exclusive duties that were not delegated in the lookback period, regardless of whether
those duties could be delegated.
Both views, therefore, al ow agencies to delegate the duties of an office and thereby exclude those
duties from the Vacancies Act’s definition of function or duty: the first view broadly excludes any
delegable duties, and the second view honors regulatory delegations in effect during the 180-day
lookback period. As mentioned, the first reading interpreting the Vacancies Act to govern only a
narrow set of nondelegable duties has seemed to be the prevailing view.

77 Id. at 33.
78 U.S. CONST. art. II, § 2, cl. 2.
79 See, e.g., 144 CONG. REC. S11021 (daily ed. Sept. 28, 1998) (statement of Sen. Fred T hompson) (“As participants in
the appointments process, we Senators have an obligation, I believe, to ensure that the appointments clause functions as
it was designed, and that manipulation of executive appointments not be permitted.”).
80 5 U.S.C. § 3347. As discussed supra note 44, the legislative history suggests that legislators were especially
concerned with the fact that the Department of Justice was using general vesting-and-delegation statutes to evade the
Vacancies Act’s limitations on acting service.
81 See L.M.-M., 442 F. Supp. 3d at 34.
82 See, e.g., Guedes v. Bureau of Alcohol, T obacco, Firearms & Explosives, 920 F.3d 1, 12 (D.C. Cir. 2019) (per
curiam).
83 L.M.-M., 442 F. Supp. 3d at 34.
84 Id.
85 Id. at 33.
86 Id.
87 Id.
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Vacancies Act Limitations on Acting Service
Section 3348 of the Vacancies Act al ows only certain officers or employees to perform the
“functions and duties” of a vacant advice-and-consent office.88 Unless an acting officer is serving
in compliance with the Vacancies Act, only the agency head can perform a covered duty of a
vacant advice-and-consent office.89 The Vacancies Act creates two primary types of limitations on
acting service: it limits (1) the classes of people who may serve as an acting officer,90 and (2) the
time period for which they may serve.91
Who Can Serve as an Acting Officer?
Section 3345 al ows three classes of government officials or employees to temporarily perform
the functions and duties of a vacant advice-and-consent office under the Vacancies Act.92 First, as
a default and automatic rule, once an office becomes vacant, “the first assistant to the office”
becomes the acting officer.93 The term “first assistant” is a term of art under the Vacancies Act.94
Nonetheless, the term is not defined by the Act and its meaning is not entirely clear.95 The
Vacancies Act’s legislative history suggests that the term refers to an office’s “top deputy.”96 For
some offices, a statute or regulation explicitly designates an office to be the “first assistant” to

88 5 U.S.C. § 3348(b).
89 Id. §§ 3345, 3346, 3348. Additionally, as discussed supra notes 42 to 48 and accompanying text, the Vacancies Act
allows a person to perform the duties of an office if another statute expressly authorizes “ an officer or employee to
perform the functions and duties of a specified office temporarily in an acting capacity .” Id. §§ 3347, 3348.
90 Id. § 3345.
91 Id. § 3346.
92 Id. § 3345.
93 Id. § 3345(a)(1).
94 See 144 CONG. REC. S12822 (daily ed. Oct. 21, 1998) (statement of Sen. Fred T hompson) (“The term ‘first assistant
to the officer’ has been part of the Vacancies Act since 1868 . . . and the change in wording [to ‘first assistant to the
office’] is not intended to alter case law on the meaning of the term ‘first assistant.’”). Cf., e.g., L.M.-M. v. Cuccinelli,
442 F. Supp. 3d 1, 25–26 (D.D.C. 2020) (looking to a dictionary to determine the ordinary meaning of the term “ first
assistant”).
95 Compare Doolin Sec. Sav. Bank v. Office of T hrift Supervision, 156 F.3d 190, 192 (D.C. Cir. 1998) (“[W] hether
internal [agency] documents referring to Fiechter as a ‘first assistant ’ rendered him such for the purposes of the
Vacancies Act is a matter of considerable uncertainty. Our opinion in Doolin [I] recognized that, according to ‘one line
of authority,’ the position of ‘first assistant ’ must be created by statute before the automatic succession provision of the
Vacancies Act applies.”) (quoting Doolin Sec. Sav. Bank v. Office of T hrift Supervision ( Doolin I), 139 F.3d 203, 209
n.3 (D.C. Cir. 1998)), with Guidance on Application of Fed. Vacancies Reform Act of 1998, 23 Op. O.L.C. 6 0, 63
(1999) (“At a minimum, a designation of a first assistant by statute, or by regulation where no statutory first assistant
exists, should be adequate to establish a first assistant for purposes of the Vacancies Reform Act.”).
96 144 CONG. REC. S11037 (daily ed. Sept. 28, 1998) (statement of Sen. Joseph Lieberman) (describing “first assistant”
as “a term of art that generally refers to the top deputy”). See also L.M.-M., 442 F. Supp. 3d at 24 (ruling that an official
was not a “first assistant” because he occupied a temporary position that would never “serve in a subordinate role—that
is, as an ‘assistant’—to any other . . . official”).
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that position.97 However, not al offices have such statutory or regulatory designations, and in
those cases, who qualifies as the “first assistant” to that office may be open to debate.98
One additional question has been whether a first assistant must be serving at the time the vacancy
occurs, or whether a person who later steps into the first assistant position can also serve as an
acting officer under this provision of the Vacancies Act.99 The most recent executive branch
position on this question concludes that new first assistants can step in as acting officials.100 In a
2001 opinion, the OLC noted that the text of the Vacancies Act refers to “the first assistant to the
office,” not the particular officer.101 The OLC emphasized that prior versions of the Act had
formerly used the phrase “first assistant to the officer,” and argued that requiring a first assistant
to be in place at the time of the vacancy would, in effect, improperly revive this old text by
requiring that person to be the first assistant to the departing officer.102
Apart from the first assistant, the President “may direct” two other classes of officials to serve as
acting officers instead.103 First, the President may direct a person who has been confirmed to a
different advice-and-consent position to serve as acting officer.104 Second, the President can select
a senior “officer or employee” of the same executive agency, if that employee served in that
agency for at least 90 days during the year preceding the vacancy and is paid at a rate equivalent
to at least a GS-15 on the federal pay scale.105
Section 3345 places an additional limitation on the ability of these three classes of officials to
serve as acting officers for an advice-and-consent position. As a general rule, if the President
nominates a person to the vacant position, that person “may not serve as an acting officer” for that
position.106 Thus, if the President nominates a person who is currently the acting officer for that

97 E.g., 28 U.S.C. § 508 (“[F]or the purpose of section 3345 of title 5 the Deputy Attorney General is the first assistan t
to the Attorney General.”); 28 C.F.R. § 0.137(b) (2019) (“ Every office within the Department to which appointment is
required to be made by the President with the advice and consent of the Senate . . . shall have a First Assistant within
the meaning of t he Federal Vacancies Reform Act of 1998. Where there is a position of Principal Deputy to the . . .
office, the Principal Deputy shall be the First Assistant. Where there is no position of Principal Deputy . . . , the First
Assistant shall be the person whom the Attorney General designates in writing.”).
98 See supra note 95; see also Designating an Acting Director of the Federal Housing Finance Agency, slip op. at 8
(Op. O.L.C. Mar. 18, 2019), https://www.justice.gov/olc/file/1220591/download (stating that where an agency has
multiple deputy directors, “none of them is obviously the . . . Director’s ‘first assistant’”).
99 See, e.g., L.M.-M., 442 F. Supp. 3d at 24 (noting that this “ dispute poses a difficult question that the Office of Legal
Counsel has answered differently at different times”). Com pare Guidance on Application of Federal Vacancies Reform
Act of 1998, 23 Op. O.L.C. 60, 64 (1999) (concluding that an officer “ must be the first assistant when the vacancy
occurs in order to be the acting officer by virt ue of being the first assistant”), with Designation of Acting Associate
Attorney General, 25 Op. O.L.C. 177, 180 (2001) (concluding that the prior OLC interpretation was erroneous and that
the Vacancies Act, particularly as amended by Congress, “ does not require that the first assistant be in place at the time
the vacancy occurred to be the acting officer by virt ue of being the first assistant”).
100 E.g., Designation of Acting Associate Attorney General, 25 Op. O.L.C. 177, 180 (2001).
101 Id. at 179–80.
102 Id.
103 5 U.S.C. § 3345. T his directive may come only from the President. Id. T here is one additional class of officials who
may serve as acting officers: if an officer serves a fixed term rather than serving at the pleasure of the President, and the
President has nominated that officer “for reappointment for an additional term to the same office in an Executive
department without a break in service,” then the President may direct that officer to serve, subject to the same time
limitations imposed by the Vacancies Act on any other acting officer. Id. § 3345(c)(1).
104 Id. § 3345(a)(2).
105 Id. § 3345(a)(3).
106 See id. § 3345(b); NLRB v. SW Gen., Inc., 137 S. Ct. 929, 935 (2017). In NLRB v. SW General, Inc., the Supreme
Court held that 5 U.S.C. § 3345(b)(1) applied to all three classes of persons who might serve as acting officers under
the Vacancies Act, rather than only to first assistants serving under 5 U.S.C. § 3345(a)(1). SW Gen., 137 S. Ct. at 938.
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position, that person usual y may not continue to serve as acting officer without violating the
Vacancies Act.107 The President can name another qualified person to serve as an acting officer
instead of the nominated person.108
The limitations of the Vacancies Act can create the need to shift government employees to
different positions within the executive branch. For example, in January 2017, shortly after
entering office, President Trump named Noel Francisco as Principal Deputy Solicitor General.109
Francisco then began to serve as Acting Solicitor General.110 In March of that year, the President
announced that he would be nominating Francisco to serve permanently as the Solicitor
General.111 After this announcement, Francisco was moved to another role in the department and
Jeffrey Wal , who was chosen by Francisco to be the new Principal Deputy Solicitor General,
became the acting Solicitor General.112 This last shift may have occurred to comply with the
Vacancies Act.113 Ultimately, the Senate confirmed Francisco to the position of Solicitor General
on September 19, 2017.114
There is an exception to this limitation: a person who is nominated to an office may serve as
acting officer for that office if that person is in a “first assistant” position to that office and either
(1) has served in that position for at least 90 days during the year preceding the vacancy115 or (2)
was appointed to that position through the advice-and-consent process.116 Returning to the
example of the Solicitor General position, it appears that this exception would not have al owed
Noel Francisco to continue to serve as the Acting Solicitor General, once nominated to that
position.117 Although Francisco may have been in a first assistant position, as the Principal
Deputy Solicitor General,118 he had not served in that position for 90 days prior to the vacancy;
nor had he been appointed to that position through the advice-and-consent process.119

For more on this decision, see CRS Legal Sidebar WSLG1840, Help Wanted: Suprem e Court Holds Vacancies Act
Prohibits Nom inees from Serving as Acting Officers, by Valerie C. Brannon.
107 SW Gen., 137 S. Ct. at 944.
108 See 5 U.S.C. § 3345(b); SW Gen., 137 S. Ct. at 944.
109 Marcia Coyle, Noel Francisco, Trump’s Solicitor General Pick, Is Sidelined for Now, NAT’L LAW J. (Apr. 6, 2017),
http://www.law.com/nationallawjournal/almID/1202783127057.
110 Id. Francisco replaced Ian Gershengorn in this role, who had himself been a Principal Deputy Solicitor General
serving as Acting Solicitor General. See Attorney General Loretta E. Lynch Statement on Planned Departure of
Solicitor General Donald B. Verrilli Jr. (June 2, 2016), https://www.justice.gov/opa/pr/attorney-general-loretta-e-lynch-
statement -planned-departure-solicitor-general-donald-b.
111 Coyle, supra note 109.
112 Id.
113 See id.; see also Amy Howe, Opinion analysis: Court limits “acting” appointments to fill vacan cies, SCOT USBLOG
(Mar. 22, 2017), http://www.scotusblog.com/2017/03/opinion-analysis-court -limits-acting-appointments-fill-vacancies.
114 163 CONG. REC. S5835 (daily ed. Sept. 19, 2017) (recording Rollcall Vote No. 201 Ex.).
115 See 5 U.S.C. § 3345(b)(1)(A).
116 See id. § 3345(b)(2).
117 See id. § 3345(b).
118 See 28 C.F.R. § 0.137(b) (2019) (“Every office within the Department to which appointment is required to be made
by the President with the advice and consent of the Senate . . . shall have a First Assistant within the meaning of the
[Vacancies Act]. Where there is a position of Principal Deputy to [an advice-and-consent position], the Principal
Deputy shall be the First Assistant.”).
119 See Jimmy Hoover, Jones Day Attys Nab Key Legal Jobs in Trump Administration , LAW 360 (Jan. 20, 2017),
https://www.law360.com/articles/883009/jones-day-attys-nab-key-legal-jobs-in-trump-administration; Amy Howe,
Francisco confirm ed as solicitor general, SCOT USBLOG (Sept. 19, 2017), http://www.scotusblog.com/2017/09/
francisco-confirmed-solicitor-general.
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For How Long?
The Vacancies Act general y limits the amount of time that a vacant advice-and-consent position
may be fil ed by an acting officer.120 Section 3346 provides that a person may serve “for no longer
than 210 days beginning on the date the vacancy occurs,” or, “once a first or second nomination
for the office is submitted to the Senate, from the date of such nomination for the period that the
nomination is pending in the Senate.”121 These two periods run independently and concurrently.122
Consequently, the submission and pendency of a nomination al ow an acting officer to serve
beyond the initial 210-day period.123
Figure 1. Two Limited Periods of Service

Source: 5 U.S.C. § 3346.
The 210-day time limitation is tied to the vacancy itself, rather than to any person serving in the
office, and the period general y begins on the date that the vacancy occurs.124 This period does not
begin on the date an acting officer is named, and because it runs continuously from the
occurrence of the vacancy, the time limitation is unaffected by any changes in who is serving as
acting officer.125 The period is extended during a presidential transition period when a new
President takes office.126 If a vacancy exists on the new President’s inauguration day or occurs
within 60 days after the inauguration,127 then the 210-day period begins either 90 days after
inauguration or 90 days after the date that the vacancy occurred, depending on which is later.128 If

120 T hese time limitations do not apply, however, to “a vacancy caused by sickness.” 5 U.S.C. § 3346(a).
121 Id.
122 See id. T hus, as a technical matter, the submission of a nomination does not stop the clock on the 210 -day period.
T hat 210-day counter keeps running. Nevertheless, as a practical matter, the President’s submission of a nomination to
Congress renders the 210-day period irrelevant. Often, the submission and pendency of a nomination will take longer
than 210 days. However, even if a nomination is rejected, withdrawn, or returned before 210 days have passed, that
return will trigger a new 210-day period, as discussed infra note 132 and accompanying text. See id. § 3346(b).
123 See id. § 3346.
124 See id. § 3346(a)(1). However, “[i]f a vacancy occurs during an adjournment of the Congress sine die, the 210 -day
period . . . shall begin on the date that the Senate first reconvenes.” Id. § 3346(c). Additionally, “ [i]f the last day of any
210-day period under section 3346 is a day on which the Senate is not in session, the second day the Senate is next in
session and receiving nominations shall be deemed to be the last day of such period.” Id. § 3348(c).
125 See id. § 3346(a)(1) (stating that an acting officer may serve in the office “for no longer than 210 days beginning on
the date the vacancy occurs”) (emphasis added).
126 See id. § 3349a.
127 T his provision refers to the “transitional inauguration day,” defined as “ the date on which any person swears or
affirms the oath of office as President, if such person is not the President on the date preceding the date of swearing or
affirming such oath of office.” Id. § 3349a(a). T he relevant period in which a vacancy must exist is “ the 60-day period
beginning on a transitional inauguration day.” Id. § 3349a(b).
128 Id. § 3349a(b). In effect, an acting official may serve for a 300 -day period during a presidential transition. Id.
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an acting officer attempts to perform a function or duty of an advice-and-consent office after the
210-day period has ended, and if the President has not nominated anyone to the office, that act
wil have no force or effect.129
Alternatively, Section 3346 al ows an acting officer to serve while a nomination to that position
“is pending in the Senate,” regardless of how long that nomination is pending.130 The legislative
history of the Vacancies Act suggests that an acting officer may serve during the pendency of a
nomination even if that nomination is submitted after the 210-day period has run following the
start of the vacancy.131 “If the first nomination for the office is rejected by the Senate, withdrawn,
or returned to the President by the Senate,” then an acting officer may continue to serve for
another 210-day period beginning on the date of that rejection, withdrawal, or return.132 If the
President submits a second nomination for the office, then an acting officer may continue to serve
during the pendency of that nomination.133 If the second nomination is also “rejected, withdrawn,
or returned,” then an acting officer may continue for one last 210-day period.134 However, an
acting officer may not serve beyond this final period—the Vacancies Act wil not al ow acting
service during the pendency of a third nomination, or any subsequent nominations.135 Again, if
the acting officer serves beyond the pendency of the first or second nomination and the
subsequent 210-day periods, any action performing a function or duty of the office wil have no
force or effect.136

129 See id. § 3348. T he Comptroller General is required to report any officer “serving longer than the 210-day period
including the applicable exceptions to such period” to various congressional committees, the President, and the Office
of Personnel Management. Id. § 3349(b).
130 Id. § 3346(a)(2). However, 5 U.S.C. § 3345(b) generally limits the ability of a person to serve as acting officer if
that person is the one nominated to the position, as discussed supra notes 106 to 119 and accompanying text.
131 144 CONG. REC. S11022 (daily ed. Sept. 28, 1998) (statement of Sen. Fred T hompson) (“The acting officer may
continue to serve beyond [210] days if the President submits a nomination for the position even if that occurs after the
[210th] day. So at the [210]-day expiration, the President still has it within his sole discretion to make the nomination;
just simply send the nomination up and the acting officer can come back once again and assume his duties.”). See also
Guidance on Application of Fed. Vacancies Reform Act of 1998, 23 Op. O.L.C. 60, 68 (1999) (describing 5 U.S.C.
§ 3346 as containing a “ spring-back provision, which permits an acting officer to begin performing the functions and
duties of the vacant office again upon the submission of a nomination”).
132 5 U.S.C. § 3346(b)(1).
133 Id. § 3346(b)(2)(A).
134 Id. § 3346(b)(2)(B).
135 See id. § 3346(a)(2).
136 See id. § 3348.
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Figure 2. Period of Service After Submission of Nomination

Source: 5 U.S.C. § 3346.
Consequences of Violating the Vacancies Act
The Vacancies Act may be enforced through both the political process and through litigation.
Several provisions of the Vacancies Act are central y enforced through political measures rather
than through the courts. For example, while the Act provides that an “office shal remain vacant”
unless an acting officer is serving “in accordance with” the Vacancies Act, the statute does not
create a clear mechanism to directly implement this provision.137 Accordingly, the text of the
Vacancies Act does not contemplate a means of removing any noncompliant acting officers from
office.
Similarly, if the Comptroller General determines that an officer has served “longer than the 210-
day period,” the Comptroller General must report this to the appropriate congressional
committees.138 This provision does not require the Comptroller General to make any such
determination, may depend in part on agency reporting of vacancies,139 and contains no additional

137 Id. § 3347.
138 Id. § 3349(b). GAO’s website has a searchable database containing the vacancies that agencies have reported to
them. Federal Vacancies Reform Act, GAO, https://www.gao.gov/legal/other-legal-work/federal-vacancies-reform-act
(last visited May 27, 2021).
139 A 2019 GAO opinion suggested that agencies are not fully compliant with their reporting obligations under the
Vacancies Act. Agency Compliance with the Federal Vacancies Reform Act for Positions Subject to the Jurisdiction of
Senate Finance Committee, B-329903 (Comp. Gen. Feb. 7, 2019).
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enforcement mechanism.140 If the Comptroller General does make such a report to Congress, this
reporting mechanism may prompt congressional action pressuring the executive branch to comply
with the Vacancies Act, exerted through normal channels of oversight.141 For instance, in March
2018, the House Committee on Ways and Means Subcommittee on Social Security held a hearing
on a vacancy in the office of the Commissioner of Social Security.142 The day before the hearing,
the Comptroller General issued a letter reporting that the Acting Commissioner, Nancy Berryhil ,
was violating the Vacancies Act.143 Shortly thereafter, Berryhil reportedly stepped down from the
position of Acting Commissioner, serving instead in her position of record as Deputy
Commissioner of Operations.144
The most direct means to enforce the Vacancies Act is through private suits in which courts may
nullify noncompliant agency actions.145 Violations of the Vacancies Act are general y enforced
only if a third party with standing (such as a regulated entity that has been injured by agency
action) successfully chal enges the action in court.146 The Vacancies Act renders noncompliant
actions “void ab initio,”147 meaning that they were “null from the beginning,”148 by providing that
such actions have “no force or effect.”149
The consequences that flow from a determination that an action is “void” are more severe than if
a court were to announce that the action was merely “voidable.”150 A “voidable” action is one that

140 See 5 U.S.C. § 3349(b).
141 See generally, e.g., Andrew McCanse Wright, Constitutional Conflict and Congressional Oversight, 98 MARQ. L.
REV. 881 (2014). T he reporting requirement may result in the GAO issuing a formal opinion about whether a particular
acting officer is complying with the Vacancies Act. See, e.g., Fed. Vacancies Reform Act of 1998 - Assistant Attorney
Gen. for the Office of Legal Counsel, U.S. Dep’t of Justice, B-310780, 2008 U.S. Comp. Gen. LEXIS 101 (Comp.
Gen. June 13, 2008).
142 See Hearing on Lacking a Leader: Challenges Facing the SSA after over 5 Years of Acting Commissioners, H.
COMM. ON WAYS & MEANS (Mar. 7, 2018), https://waysandmeans.house.gov/event/hearing-lacking-leadership-
challenges-facing-ssa-5-years-acting-commissioners.
143 Violation of the T ime Limit Imposed by the Federal Vacancies Reform Act of 1998 —Commissioner, Social
Security Administration, B-329853 (Comp. Gen. Mar. 6, 2018).
144 Joe Davidson, Social Security Is Now Headless because of Trump’s Inaction. Will Other Agencies Be Decapitated? ,
WASH. POST (Mar. 12, 2018), https://www.washingtonpost.com/news/powerpost/wp/2018/03/12/social-security-now-
headless-because-of-trumps-inaction-will-others-agencies-be-decapitated. See also, e.g., Extension of Expiration Dates
for T wo Body System Listings, 83 Fed. Reg. 13863 (Apr. 2, 2018) (signed by “Nancy Berryhill, Deputy Commissioner
for Operations, performing the duties and functions not reserved to the Commissioner of Social Security”).
145 See S. REP. NO. 105-250, at 19–20 (1998) (“The Committee expects that litigants with standing to challenge
purported agency actions taken in violation of these provisions will raise non-compliance with this legislation in a
judicial proceeding challenging the lawfulness of the agency action.”).
146 Although the court ultimately upheld the agency’s action, one example of such a challenge is found in Schaghticoke
Tribal Nation v. Kem pthorne, 587 F. Supp. 2d 389, 419–20 (D. Conn. 2008), aff’d, 587 F.3d 132 (2d Cir. 2009). Cf.
Williams v. Phillips, 360 F. Supp. 1363, 1364, 1367 (D.D.C. 1973) (considering whether Vacancies Act authorized
person’s service as Acting Director of the Office of Economic Opportunity in the context of a suit brought by Senators
to remove person from that position).
147 See NLRB v. SW Gen., Inc., 137 S. Ct. 929, 938 n.2 (2017).
148 BLACK’S LAW DICTIONARY (10th ed. 2014) (defining “void ab initio” as “[n]ull from the beginning, as from the first
moment when a contract is entered into”). E.g., Interstate Commerce Comm’n v. Am. T rucking Ass’ns, 467 U.S. 354,
358 (1984) (noting that if tariff is rendered void ab initio, “ whatever tariff was in effect prior to the adop tion of the
rejected rate becomes the applicable tariff for the period.”).
149 See 5 U.S.C. § 3348(d).
150 See, e.g., Sphere Drake Ins. Ltd. v. Clarendon Nat’l Ins. Co., 263 F.3d 26, 31 (2d Cir. 2001) (noting that a void
contract “produces no legal obligation,” but that a voidable contract does impose legal obligations unless rescinded).
See also Quality Health Servs. of P.R., Inc. v. NLRB, 873 F.3d 375, 383 (1st Cir. 2017) (holding that the issue of
validity of agency action had been waived under exhaustion st atute, in part because complaints issued by Acting
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may be judged invalid because of some legal defect, but that “is not incurable.”151 For instance,
before a court strikes down a voidable agency decision, it wil often inquire into whether the legal
defect created actual prejudice.152 If an error is harmless, the court may uphold the agency
action.153 In contrast, acts that are “void” may not be ratified or rendered harmless, meaning that
another person who properly exercises legal authority on behalf of an agency may not
subsequently approve or replicate the act, thereby rendering it valid.154 The Vacancies Act affirms
this consequence by explicitly specifying that an agency may not ratify any acts taken in violation
of the statute.155
Federal district courts have, on occasion, vacated agency actions as void (as opposed to voidable)
after determining the chal enged actions were taken by officials improperly performing the duties
of a vacant office.156 In reviewing these agency actions, these courts have cited not only the “no
force or effect” provision of the Vacancies Act, but also a provision of the Administrative
Procedure Act (APA) that directs courts to “hold unlawful and set aside” any agency action that is
“not in accordance with law.”157 For example, in L.M.-M. v. Cuccinelli, a federal district court
expressly ruled that both the Vacancies Act and the APA authorized the court to vacate the

General Counsel of NLRB were, at most, voidable rather than void).
151 Easley v. Pettibone Mich. Corp., 990 F.2d 905, 909 (6th Cir. 1993). T he court in Easley considered both legal and
ordinary definitions of the term “voidable,” as distinct from the term “void,” and decided that because it was
considering the effect of an admitted legal error that could be cured, the most appropriate term to describe this
particular type of defective action was “ invalid.” Id. at 909–10. Accord Chapman v. Bituminous Ins. Co. (In re Coho
Res., Inc.), 345 F.3d 338, 344 (5th Cir. 2003) (“[V]iolations [of a certain provision of the bankruptcy code] are merely
‘voidable’ and are subject to discretionary ‘cure.’”). Cf. BLACK’S LAW DICTIONARY (10th ed. 2014) (stating that the
term “voidable” “ describes a valid act that may be voided rather than an invalid act that may be ratified.”).
152 See, e.g., SW Gen., Inc. v. NLRB, 796 F.3d 67, 79 (D.C. Cir. 2015), aff’d 137 S.Ct. 929, 944 (2017); Prof’l Air
T raffic Controllers Org. v. FLRA, 685 F.2d 547, 564 (D.C. Cir. 1982); L.M. -M. v. Cuccinelli, 442 F. Supp. 3d 1, 35–36
(D.D.C. 2020).
153 See, e.g., Brock v. Pierce Cty., 476 U.S. 253, 260 (1986) (“We would be most reluctant to conclude that every
failure of an agency to observe a procedural requirement voids subsequent agency action . . . . When, as here, there are
less drastic remedies available for failure to meet a statutory deadline, courts should not assume that Congress intended
the agency to lose its power to act.”).
154 See, e.g., Shapleigh v. San Angelo, 167 U.S. 646, 652 (1897) (“ Did the decree of the district court . . . abolishing the
city of San Angelo . . . operate to render its incorporation void ab initio, and to nullify all its debts and obligations
created while its validity was unchallenged? Or can it be held, consistently with legal principles, that the abolition of
the city government, as at first organized, because of some disregard of law, and its reconstruction so as to include
within its limits the public improvements for which bonds had been issued during the first organization, devolved upon
the city so reorganized the obligations that would have attached to the original city if the State had continued to
acquiesce in the validity of its incorporation?”); FEC v. Legi-T ech, 75 F.3d 704, 707 (D.C. Cir. 1996) (stating, in
description of party arguments, that the Federal Election Commission’s subsequent ratification of a def ective civil
enforcement proceeding could not cure error rendering that proceeding void ab initio).
155 5 U.S.C. § 3348. Legislative history suggests that Congress was specifically concerned with overruling the decision
of the D.C. Circuit in Doolin Security Savings Bank v. Office of Thrift Supervision, 139 F.3d 203, 214 (D.C. Cir. 1998),
in which that court had held that because a successor “effectively ratified” the action of an acting officer, the court did
not need to decide whether that acting officer had “ lawfully occupied the position.” See S. REP . NO. 105-250, at 5
(1998) (noting Doolin “ underscored” the “ need for new legislation”). T his Senate report expressed concern that “ the
ratification approach taken by the court in Doolin would render enforcement of the [Vacancies Act] a nullity in many
instances.” Id. at 20. See also 144 CONG. REC. S11022 (daily ed. Sept. 28, 1998) (statement of Sen. Fred T hompson)
(referencing Doolin as reason to enact bill).
156 L.M.-M. v. Cuccinelli, 442 F. Supp. 3d 1, 35–36 (D.D.C. 2020); Crawford-Hall v. United States, 394 F. Supp. 3d
1122, 1154 (C.D. Cal. 2019).
157 5 U.S.C. § 706(2); Bullock v. U.S. Bureau of Land Mgmt., 489 F. Supp. 3d 1112, 1130 (D. Mont. 2020); L.M.-M.,
442 F. Supp. 3d at 34; Crawford-Hall, 394 F. Supp. 3d at 1154.
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agency’s actions.158 In applying the APA provision, the court considered the mitigating doctrine of
harmless error, asking whether the plaintiffs were prejudiced by the error.159 The court ultimately
concluded that the error was not harmless because a different acting officer, serving properly,
might have taken different actions.160 The L.M.-M. court did not, however, consider any
mitigating doctrines before concluding the actions had no force or effect under the Vacancies Act,
holding that the Act barred the court from considering the ratification doctrine.161
The Vacancies Act’s enforcement mechanisms—the no-force-or-effect provision and the no-
ratification provision—apply if a person performs a “function or duty” of the vacant office.162
Consequently, their application is subject to the interpretive dispute described above regarding the
proper interpretation of “function or duty.”163 The breadth of this definition can have significant
consequences for agency actions. For example, as noted above, the D.C. Circuit adopted a
narrower definition of “function or duty” in Guedes v. Bureau of Alcohol, Tobacco, Firearms and
Explosives, and therefore held that the Attorney General could ratify an action taken by an acting
official who al egedly served in violation of the Vacancies Act.164 The court said that the
Vacancies Act only precludes the ratification of nondelegable duties and implicitly concluded that
the relevant action was delegable.165 Consequently, because Section 3348 did not apply, the court
held that the action could be ratified by the Attorney General.166 Thus, based on its narrower view
of duties covered by the Vacancies Act, the court appeared to rule that the agency action could be
ratified because the duty was delegable, even though the duty had not in fact been delegated to
another official.167
As mentioned above, it is not entirely clear what the consequences are if a person performs a
function or duty of a vacant office that fal s within one of the exceptions from Section 3348.168
Certain offices are exempt from the provision that nullifies the noncompliant actions of an acting
officer,169 and the statute does not otherwise specify what consequences follow, if any, if a person
temporarily serving in one of those offices violates the Vacancies Act.170 In NLRB v. SW General,
Inc., the Supreme Court explicitly left open the question of remedy with respect to those officials
who are carved out of Section 3348.171 In that case, the Supreme Court held that the service of the
Acting General Counsel of the National Labor Relations Board (NLRB) violated the Vacancies
Act, but noted that this position was exempt “from the general rule that actions taken in violation
of the [Vacancies Act] are void ab initio.”172 The Court affirmed the D.C. Circuit ruling vacating

158 L.M.-M., 442 F. Supp. 3d at 35–36.
159 Id. at 35. T he court also considered and rejected application of the de facto officer doctrine. Id.
160 Id.
161 Id. at 30–36.
162 5 U.S.C. § 3348.
163 See supra “What Are the “Functions and Duties” of an Office?”
164 Guedes v. Bureau of Alcohol, T obacco, Firearms & Explosives, 920 F.3d 1, 12 (D.C. Cir. 2019) (per curiam).
165 See id.
166 Id.
167 See id.
168 Supra “Which Offices?”
169 5 U.S.C. § 3348(e).
170 See id. § 3348.
171 NLRB v. SW Gen., Inc., 137 S. Ct. 929, 938 n.2 (2017); 5 U.S.C. § 3348.
172 SW Gen., Inc., 137 S. Ct. at 938 n.2.
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the Acting General Counsel’s noncompliant actions, but did not explicitly reconsider the issue of
remedy.173
The D.C. Circuit in SW General, Inc. had itself clarified that it was not fully exploring the
question of the appropriate remedy and was merely assuming, on the basis of the parties’
arguments, “that section 3348(e)(1) renders the actions of an improperly serving Acting General
Counsel voidable, not void.”174 Accordingly, because the D.C. Circuit assumed that the contested
actions were voidable, the court considered but ultimately rejected application of the harmless
error and de facto officer doctrines.175 If the Acting General Counsel were not exempt from
Section 3348 and his noncompliance with the Vacancies Act had rendered his acts void ab initio,
the court could not have considered whether these legal doctrines cured the initial legal error with
the Acting General Counsel’s actions.176 The D.C. Circuit later held in another case that
complaints initial y filed by the improperly appointed General Counsel had been ratified by a
properly appointed General Counsel, and therefore could not be chal enged on the basis of the
initial improper appointment.177
Notwithstanding its decision to accept the parties’ litigating postures in SW General, the D.C.
Circuit expressly left open the possibility that the Vacancies Act might “wholly insulate the
Acting General Counsel’s actions,” so that the actions of an acting officer in one of these named
offices are not even voidable.178 It is possible that the Vacancies Act does not undermine the
legality of the actions of these specified officers, even if they violate the Act, and that, under this
interpretation, these positions could be indefinitely fil ed by acting officers without consequence
under the Vacancies Act.
These questions may be clarified in future litigation, but Congress could, if it so chose, add
statutory language more explicitly addressing or otherwise clarifying the consequences of
violating the Vacancies Act, particularly with respect to those offices exempt from the
enforcement mechanisms contained in Section 3348.179 Congress could also amend the existing
enforcement mechanisms, possibly by altering the reporting requirements or by adding additional
consequences for violations of the Vacancies Act.180

173 See id. (noting that the NLRB had not sought certiorari on this issue).
174 SW Gen., Inc., 796 F.3d at 79. Similarly, in Hooks ex rel. NLRB v. Kitsap Tenant Support Servs., 816 F.3d 550, 564
(9th Cir. 2016), the court dismissed a petition issued by the same Acting General Counsel, citing the D.C. Circuit’s
opinion to conclude that his actions were voidable. However, the court expressly noted that the NRLB had “waived any
arguments based on the FVRA’s exemption clause, 5 U.S.C. § 3348(e), and it [did] not otherwise contest the remedy
sought by [the party challenging the petition].” Id. See also Creative Vision Res., L.L.C. v. NLRB, 882 F.3d 510, 528
n.6 (5th Cir. 2018); Quality Health Servs. of P.R., Inc. v. NLRB, 873 F.3d 375, 383 n.7 (1st Cir. 2017); Hooks v.
Remington Lodging & Hospitality, L.L.C., 8 F. Supp. 3d 1178, 1189 (D. Alaska 2014).
175 SW Gen., Inc., 796 F.3d at 81 (holding error had not been rendered harmless by subsequent de novo review and
ratification of the complaint by a properly appointed General Counsel); id. at 82 (holding NLRB had not shown that the
de facto officer doctrine should apply in this case to bar plaintiff’s attack on the complaint because the doctrine allows
collateral attacks against actions taken by officers acting under the color of official title, so long as those challenges ar e
properly preserved and the agency had reasonable notice of the defect in the officer’s title to office).
176 See id. at 81; 5 U.S.C. § 3348(d), (e).
177 Midwest T erminals of T oledo Int’l, Inc v. NLRB, 783 Fed. Appx. 1, 7 (D.C. Cir. 2019).
178 See SW Gen., Inc., 796 F.3d at 79. Counsel for NLRB apparently had not raised this argument, and accordingly the
D.C. Circuit “express[ed] no view” on whether it was correct. Id.
179 See 5 U.S.C. § 3348.
180 See id. §§ 3348, 3349. See also, e.g., H.R. 1847, 116th Cong. § 3 (2019) (providing that “[i]f the President fails to
make a formal nomination for a vacant Inspector General position ” within 210 days of the vacancy occurring, the
President must submit to Congress “(1) the reasons why the President has not yet made a formal nomination; and (2) a
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Evolving Legal Issues
Thus far, this report has discussed the Vacancies Act in isolation. The remainder of this report
turns to selected, evolving legal issues that involve questions about how other federal laws,
including both statutes and the Constitution, interact with the Vacancies Act. It also highlights
special considerations for Congress.
Exclusivity of the Vacancies Act
The Vacancies Act provides “the exclusive means” to authorize “an acting official to perform the
functions and duties” of a vacant office—unless another statute “expressly”:
(A) authorizes the President, a court, or the head of an Executive department, to designate
an officer or employee to perform the functions and duties of a specified office temporarily
in an acting capacity; or
(B) designates an officer or employee to perform the functions and duties of a specified
office temporarily in an acting capacity[.]181
Across the executive branch, there are many statutes that expressly address who wil temporarily
act for specified officials in the case of a vacancy in the office.182 The Senate report on the
Vacancies Act identified 40 agency-specific provisions that “would be retained by” the Act.183 To
take one example, the Senate report anticipated that the Vacancies Act would not disturb the
provision governing a vacancy in the office of the Attorney General.184 That statute provides that
“[i]n case of a vacancy in the office of Attorney General, or of his absence or disability, the
Deputy Attorney General may exercise al the duties of that office.”185
In the event that there is an agency-specific statute designating a specific government official to
serve as acting officer, the Vacancies Act wil no longer be exclusive.186 Even if the Vacancies Act
does not exclusively apply to a specific position, though, that does not mean that the other statute
does exclusively apply.187 It is possible that both the agency-specific statute and the Vacancies Act

target date for making a formal nomination”); S. 1761, 105th Cong. § 2 (1998) (providing that “ [a]n individual who
performs the duties of an office in any Executive agency . . . temporarily in excess of” the Vacancies Act’s time limits
“may not receive pay for each day such duties are performed”).
181 5 U.S.C. § 3347(a).
182 See, e.g., 49 U.S.C. § 102 (“T he Department has a Deputy Secretary of T ransportation . . . . T he Deputy
Secretary . . . acts for the Secretary when the Secretary is absent or unable to serve or when the office of Sec retary is
vacant.”).
183 S. REP. NO. 105-250, at 16–17 (1998). See also O’CONNELL, supra note 64, app. A at 74 (2019) (compiling agency-
specific provisions).
184 S. REP. NO. 105-250, at 16 (1998).
185 28 U.S.C. § 508(a). T he statute further provides that “ for the purpose of section 3345 of title 5 the Deputy Attorney
General is the first assistant to the Attorney General.” Id. T his reference to the Vacancies Act has been in that statute at
least since its codification in Pub. L. No. 89-554 § 4(c), 80 Stat. 612 (1966).
186 See 5 U.S.C. § 3347.
187 See, e.g., Designating an Acting Director of National Intelligence, slip op. at 4 (Op. O.L.C. Nov. 15, 2019),
https://www.justice.gov/olc/file/1220586/download (“ In a series of opinions dating back to 2003, this Office has
consistently explained that the Vacancies Reform Act remains available to the President as a means for designating an
acting official even when an office-specific statute provides that someone else ‘shall’ serve in that role.”). See also
Hooks ex rel. NLRB v. Kitsap T enant Support Servs., 816 F.3d 550, 556 (9th Cir. 2016) (“ [The Vacancies Act] form[s]
the exclusive means for filling a vacancy in an Executive agency office unless another statute expressly provides a
means for filling such a vacancy. Because [29 U.S.C. § 153(d)] does so, neither the [Vacancies Act] nor [29 U.S.C.
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may be available to temporarily fil a vacancy.188 The Senate report can be read to support this
view: it states that “even with respect to the specific positions in which temporary officers may
serve under the specific statutes this bil retains, the Vacancies Act would continue to provide an
alternative procedure for temporarily occupying the office.”189 A number of courts have held that
this principle applies to the statute governing Attorney General vacancies quoted above, ruling
that the President may invoke the Vacancies Act to name an acting official and override the
statutory line of succession provided in the agency-specific statute.190
When two statutes simultaneously apply to authorize acting service, it may be unclear which
statute governs in the case of a conflict. If there are inconsistences between the two statutes and
an official’s service complies with only one of the two statutes, such a situation may prompt
chal enges to the authority of that acting official.191 The Vacancies Act sets out a detailed scheme
delineating three classes of governmental officials that may serve as acting officers192 and
expressly limits the duration of an acting officer’s service.193 By contrast, agency-specific statutes
tend to designate only one official to serve as acting officer194 and often do not specify a time
limit on that official’s service.195 Accordingly, for example, if an acting officer is designated by
the President to serve under the Vacancies Act but is not authorized to serve under the agency-
specific statute, a potential conflict may exist between the two laws.196

§ 153(d)] is the exclusive means of appointing an Acting General Counsel of the [National Labor Relations Board].”).
188 T emporary Filling of Vacancies in the Office of U.S. Attorney, 27 Op. O.L.C. 149, 149 (2003) (concluding that the
Vacancies Act and a separate statute, 28 U.S.C. § 546(a), were both “ available” to temporarily fill the position).
189 S. REP. NO. 105-250, at 17 (1998).
190 See, e.g., Guedes v. Bureau of Alcohol, T obacco, Firearms, & Explosives, 356 F. Supp. 3d 109, 139 (D.D.C. 2019),
aff’d on other grounds, 920 F.3d 1, 12 (D.C. Cir. 2019) (per curiam); see also United States v. Castillo, 772 Fed. Appx.
11, 13 n.5 (3d Cir. 2019) (collecting cases).
191 See, e.g., Lower E. Side People’s Fed. Credit Union v. T rump, 289 F. Supp. 3d 568, 571 (S.D.N.Y. 2018)
(dismissing a suit that challenged the authority of an acting officer designated under the Vacancies Act by arguin g that
an agency-specific statute provided the sole authority for someone to serve as acting director of the agency).
192 5 U.S.C. § 3345.
193 Id. § 3346.
194 See, e.g., 15 U.S.C. § 633(b)(1) (designating Deputy Administrator of the Small Business Administration to act for
Administrator); 50 U.S.C. § 3037(b)(2) (designating Deputy Director of the Central Intelligence Agency to act for
Director). Cf. 28 U.S.C. § 508 (designating Deputy Attorney General to act for Attorney General and providing that
Attorney General may designate “ further order of succession”); 42 U.S.C. § 902(b)(4) (designating Deputy
Commissioner of Social Security to act for Commissioner “ unless the President designates another officer of the
Government ”).
195 See S. REP. NO. 105-250, at 17 (1998); see also, e.g., United States v. Guzek, 527 F.2d 552, 560 (8th Cir. 1975)
(ruling that official serving under an agency-specific statute “ succeeded to all the powers of the office . . . without
circumscription by the 30-day limitation” created by a prior version of Vacancies Act). But see, e.g., 12 U.S.C.
§ 4512(f) (authorizing the designation of an acting Federal Housing Finance Agency Director who will serve “ until the
return of the Director, or the appointment of a successor”); 29 U.S.C. § 153(d) (“ [N]o person . . . designated [to act as
General Counsel of the NLRB] shall so act (1) for more than forty days when the Congress is in session unless a
nomination to fill such vacancy shall have been submitted to the Senate, or (2) after the adjournment sine die of the
session of the Senate in which such nomination was submitted.”).
196 See CRS Legal Sidebar LSB10036, UPDATE: Who’s the Boss at the CFPB?, by Valerie C. Brannon and Jared P.
Cole (describing conflict over vacancy in the position of the Director of the Consumer Financial Protection Bureau in
which the Deputy Director claimed that an agency -specific statute authorizing the Deputy to serve as Acting Director
was the sole legal authority governing the vacancy, while the President invoked the Vacancies Act to name a different
person as Acting Director).
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Where two statutes encompass the same conduct, courts wil , if possible, “read the statutes to give
effect to each.”197 Courts are general y reluctant to conclude that statutes conflict and wil usual y
assume that two laws “are capable of co-existence . . . absent a clearly expressed congressional
intention to the contrary.”198 At the same time, however, another general interpretive rule
prescribes that more specific statutes should usual y prevail over more general ones—even where
the more general statutes were enacted after the more specific ones.199 This canon of construction
could suggest that agency-specific statutes should prevail in the case of a conflict with the
Vacancies Act. Facing these two principles, courts have tended to conclude that the Vacancies Act
should operate concurrently with agency-specific statutes, and that government officials should
be able to temporarily serve under either statute.200 Accordingly, courts have resolved any
potential conflict by holding that whichever statute is invoked is the controlling one.201
For example, in Hooks ex rel. NLRB v. Kitsap Tenant Support Services, one federal court of
appeals rejected a litigant’s contention that an agency-specific statute displaced the Vacancies Act
and provided “the exclusive means” to temporarily fil a vacant position.202 The agency-specific
statute at issue in that case provided that if the office of the NLRB’s General Counsel is vacant,
“the President is authorized to designate the officer or employee who shal act as General Counsel
during such vacancy.”203 It also provided for a shorter term of acting service than the Vacancies
Act.204 The President, however, had invoked the Vacancies Act to designate an Acting General
Counsel.205 The court concluded that “the President is permitted to elect between these two
statutory alternatives to designate” an acting officer.206 Accordingly, the court rejected the
argument that because the officer’s designation did not comply with the agency-specific statute,
“the appointment was necessarily invalid.”207
The two statutes governing a vacant office might not always be so readily reconciled. In Hooks,
both the Vacancies Act and the agency-specific statute expressly authorized the President to select
an acting officer.208 A more difficult question may be raised when an agency-specific statute
instead seems to expressly limit succession to a particular official.209 The federal courts
considered such a contention in a dispute over who was authorized to serve as the Acting Director

197 Watt v. Alaska, 451 U.S. 259, 267 (1981).
198 Morton v. Mancari, 417 U.S. 535, 551 (1974).
199 See, e.g., Radzanower v. T ouche Ross & Co., 426 U.S. 148, 153 (1976) (“It is a basic principle of statutory
construction that a statute dealing with a narrow, precise, and specific subject is not submerged by a later enacted
statute covering a more generalized spectrum.”).
200 See, e.g., Guedes v. Bureau of Alcohol, T obacco, Firearms, & Explosives, 356 F. Supp. 3d 109, 139 (D.D.C. 2019),
aff’d on other grounds, 920 F.3d 1, 12 (D.C. Cir. 2019) (per curiam); English v. T rump, 279 F. Supp. 3d 307, 319
(2018); United States v. Lucido, 373 F. Supp. 1142, 1151 (E.D. Mich. 1974).
201 See, e.g., Lucido, 373 F. Supp. at 1151. See also, e.g., English, 279 F. Supp. 3d at 325 (declining to apply the canon
that more specific statutes should prevail over more general ones because it was “not clear” that the agency -specific
statute was “ more ‘specific’” than the Vacancies Act, “ as applied to” the specific circumstances of the case).
202 Hooks ex rel. NLRB v. Kitsap T enant Support Servs., 816 F.3d 550, 555 (9th Cir. 2016).
203 29 U.S.C. § 153(d).
204 See Hooks, 816 F.3d at 555.
205 Id. at 553.
206 Id. at 556.
207 Id.
208 See id. at 555–56.
209 See, e.g., Plaintiff-Appellant’s Brief at 2-3, English v. T rump, No. 18-5007 (D.C. Cir. 2018),
http://guptawessler.com/wp-content/uploads/2018/01/English-v-Trump-Brief-1.30.pdf.
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of the Consumer Financial Protection Bureau (CFPB). The position of CFPB Director became
vacant in late 2017, and the President invoked the Vacancies Act to designate Mick Mulvaney, the
Director of the U.S. Office of Management and Budget, to serve as Acting Director of the
CFPB.210 The Deputy Director of the CFPB, Leandra English, filed suit,211 arguing that she was
the lawful Acting Director under an agency-specific statute that provided that the CFPB’s Deputy
Director “shal . . . serve as acting Director in the absence or unavailability of the Director.”212
English argued that the agency-specific statute displaced the Vacancies Act under normal
principles of statutory interpretation, as a later-enacted and more specific statute.213
The U.S. District Court for the District of Columbia rejected these arguments and held that the
President had permissibly invoked the Vacancies Act to designate Mulvaney as Acting Director.214
In the trial court’s view, both statutes were available: the agency-specific statute “requires that the
Deputy Director ‘shal ’ serve as acting Director, but . . . under the [Vacancies Act] the President
‘may’ override that default rule.”215 The court invoked two interpretive canons, the rule that
statutes should be read in harmony and the rule against implied repeals, and concluded that under
the circumstances, an “express statement” was required to displace the Vacancies Act entirely.216
Accordingly, because the agency-specific statute was “silent regarding the President’s ability to
appoint an acting director,” it did not render the Vacancies Act unavailable.217
When officials serve under an agency-specific statute, they must comply with any requirements
or limitations set out in that separate statute—and may not have to comply with Vacancies Act
limitations.218 For example, between August 2020 and January 2021, six different judicial
opinions concluded that the Department of Homeland Security (DHS) had failed to comply with
the Homeland Security Act of 2002 (HSA) in designating an Acting DHS Secretary.219 The HSA

210 English v. T rump, 279 F. Supp. 3d 307, 314 (D.D.C. 2018).
211 For a more in-depth discussion of this lawsuit, see CRS Legal Sidebar LSB10036, UPDATE: Who’s the Boss at the
CFPB?, by Valerie C. Brannon and Jared P. Cole.
212 12 U.S.C. § 5491(b)(5).
213 English, 279 F. Supp. 3d at 317. See generally United States v. Estate of Romani, 523 U.S. 517, 532–33 (1998)
(noting that in the case of “ plain inconsistency” between two statutes, later -enacted, more specific statutes generally
trump prior, general statutes).
214 English, 279 F. Supp. 3d at 319. T he district court’s ruling was on a motion for a preliminary injunction, so
technically, the court held only that “ English is not likely to succeed on the merits of her claim that Dodd-Frank’s
Deputy Director provision displaces the President ’s ability to name an acting Director of the CFPB pursuant to the
FVRA.” Id. at 331. However, much of the court’s language was not so qualified.
215 English, 279 F. Supp. 3d at 319.
216 Id. at 320 (noting that the agency-specific statute provides that “[e]xcept as otherwise provided expressly by law, all
Federal laws dealing with public or Federal . . . officers . . . shall apply to the exercise of the powers of the Bureau”).
See also id. at 324–25 (invoking the presumption against implied repeals).
217 Id. at 322 (emphasis omitted).
218 See, e.g., Casa de Md., Inc. v. Wolf, 486 F. Supp. 3d 928, 955 (D. Md. 2020) (“[T ]he Court cannot generally extend
the FVRA’s timing provisions to a person serving temporarily and in an acting capacity pursuant to an agency -specific
statute.”); id. at 957 (concluding that the designation under the agency -specific statut e was likely unauthorized).
Com pare Batalla Vidal v. Wolf, Nos. 16-CV-4756 & 17-CV-5228, 2020 U.S. Dist. LEXIS 213068, at *33 (E.D.N.Y.
Nov. 14, 2020) (“ Because Mr. Wolf did not assume the Acting Secretary role under Section 3345, Sections 3346 and
3348 do not apply to him.”), with Nw. Immigrant Rights Project v. U.S. Citizenship & Immigration Servs., No. 19-
3283, 2020 U.S. Dist. LEXIS 187410, at *58 (D.D.C. Oct. 9, 2020) (concluding 5 U.S.C. § 3348(d) might apply to an
official serving under an agency-specific statute, so long as the vacant position is also covered by the Vacancies Act).
219 Pangea Legal Servs. v. U.S. Dep’t of Homeland Sec., Nos. 20-cv-09253-JD & 20-cv-09258-JD, 2021 U.S. Dist.
LEXIS 5093, at *18 (N.D. Cal. Jan. 8, 2021); Batalla Vidal, 2020 U.S. Dist. LEXIS 213068, at *37 –38; Nw. Im m igrant
Rights Project, 2020 U.S. Dist. LEXIS 187410, at *81; Immigrant Legal Res. Ctr. v. Wolf, 491 F. Supp. 3d 520 , 535–
36 (N.D. Cal. 2020); Casa de Md., Inc., 486 F. Supp. 3d at 957; La Clinica de la Raza v. T rump, 477 F. Supp. 3d 951,
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provides that the Deputy Secretary of Homeland Security is the Secretary’s “first assistant for
purposes of the Vacancies Act.”220 The HSA also states that, “notwithstanding” the Vacancies Act,
the Secretary “may designate” a “further order of succession to serve as Acting Secretary.”221
DHS Secretaries had invoked this HSA provision to designate a further order of succession, and a
number of courts held that DHS acted impermissibly when the agency attempted to instal an
Acting Secretary outside the relevant line of succession.222 However, a few of these opinions
rejected arguments al eging the Acting Secretary had additional y violated the time limits of the
Vacancies Act, concluding that because the Acting Secretary was serving under the HSA, the
Vacancies Act’s time restrictions did not apply.223 Further, some courts ruled that because the
Acting Secretary was not serving under the Vacancies Act, the no-ratification provision in Section
3348 did not apply.224 Accordingly, the courts considered a September 2020 DHS attempt to ratify
the actions of the Acting Secretary—although most of the courts ultimately concluded that the
ratification was likely ineffective on its merits.225
As Hooks and English il ustrate, congressional silence on the relationship between agency-
specific provisions and the Vacancies Act can raise difficult questions for courts. Congress can
itself resolve tensions between the Vacancies Act and agency-specific statutes by clarifying the
conditions under which these statutes apply. For example, the HSA states that the statutory
provisions governing acting service in the office of the Secretary of Homeland Security apply
“notwithstanding” the Vacancies Act,226 indicating an intent to render the Vacancies Act
inapplicable to this position.227 To take another example, the statute governing vacancies in the

972 (N.D. Cal. 2020). See also Department of Homeland Security—Legality of Service of Acting Secretary of
Homeland Security and Service of Senior Official Performing the Duties of Deputy Secretary of Homeland Security ,
B- 331650 (Comp. Gen. Aug. 14, 2020) (concluding DHS’s purported designations under the HSA were improper).
Many of the judicial decisions involved requests for preliminary injunctions, and so the courts held that the plaintiffs
were likely to succeed on the merits of their claims arguing the acting appointments were improper.
220 6 U.S.C. § 113(a)(1)(A). The HSA further specifies that, “notwithstanding” the Vacancies Act, “the Under Secretary
for Management shall serve as the Acting Secretary if “ neither the Secretary nor Deputy Secretary is available to
exercise the duties of the Office of the Secretary .” Id. § 113(g)(1).
221 Id. § 113(g)(2).
222 Specifically, after the Senate-confirmed Secretary resigned, an Acting Secretary claimed authority to act under a
succession order that pertained to acting service in the event of a disaster or catastrophic emergency, but he was not
authorized to serve under the succession order that applied in the event of the Secretary’ s death, resignation, or inability
to perform the functions of the Office. See Pangea Legal Servs., 2021 U.S. Dist. LEXIS 5093, at *20; Batalla Vidal,
2020 U.S. Dist. LEXIS 213068, at *37; Im migrant Legal Res. Ctr., 491 F. Supp. 3d at 535; Casa de Md., Inc., 486 F.
Supp. 3d at 957; La Clinica de la Raza, 477 F. Supp. 3d at 972.
223 Batalla Vidal, 2020 U.S. Dist. LEXIS 213068, at *30; Immigrant Legal Res. Ctr., 491 F. Supp. 3d at 538; Casa de
Md., Inc., 486 F. Supp. 3d at 955.
224 Batalla Vidal, 2020 U.S. Dist. LEXIS 213068, at *33 (“ Because Mr. Wolf did not assume the Acting Secretary role
under Section 3345, Sections 3346 and 3348 do not apply to him. ”); cf. Nw. Im m igrant Rights Project, 2020 U.S. Dist.
LEXIS 187410, at *52–53 (concluding that Section 3348 could apply to an Acting Secretary serving under the HSA,
but holding that the no-ratification provision did not apply to a duty that had been delegated prior to the vacancy).
225 Pangea Legal Servs., 2021 U.S. Dist. LEXIS 5093, at *21; Batalla Vidal, 2020 U.S. Dist. LEXIS 213068, at *38;
Im m igrant Legal Res. Ctr., 491 F. Supp. 3d at 535–36; but cf. Nw. Im m igrant Rights Project, 2020 U.S. Dist. LEXIS
187410, at *57, 60 (concluding that the ratification likely did render the initial errors harmless, assuming that a new
succession order was valid, but later concluding that the succession order was not valid because it was issued by an
Acting Secretary without authority to designate an order of succession).
226 6 U.S.C. § 113(g)(1) (“Notwithstanding chapter 33 of title 5, the Under Secretary for Management shall ser ve as the
Acting Secretary if . . . neither the Secretary nor Deputy Secretary is available to exercise the duties of the Office of the
Secretary.”); id. § 113(g)(2) (“Notwithstanding chapter 33 of title 5, the Secretary may designate such other officers o f
the Department in further order of succession to serve as Acting Secretary.”).
227 See, e.g., Immigrant Legal Res. Ctr., 491 F. Supp. 3d at 537; Designating an Acting Director of National
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office of Attorney General provides that “for the purpose of section 3345 of title 5 the Deputy
Attorney General is the first assistant to the Attorney General.”228 This statute expressly
clarifies—in at least one respect—how the two statutes interact.229 Congress could also amend the
Vacancies Act itself—for example, to clarify that an agency-specific statute containing a
mandatory provision for acting service not only renders the Vacancies Act nonexclusive, but also
inapplicable.230
Delegability of Duties
As discussed above, there is some dispute regarding how to interpret what “functions and duties”
are covered by the Vacancies Act,231 and some courts have interpreted the Vacancies Act to
encompass only the nondelegable functions and duties of a vacant advice-and-consent position.232
As explained earlier, this view permits an agency to delegate those duties to any other employee,
who may then perform that duty without violating the Vacancies Act.233 According to this
interpretation of the Act, in many circumstances, an agency official who has not been appointed
to a particular advice-and-consent position could perform the responsibilities of that position
pursuant to a proper delegation. At least one trial court, however, has read the Vacancies Act to
require any delegations to be in effect during the 180-day period preceding the vacancy.234
The prevailing view of the Vacancies Act as applying only to nondelegable duties requires courts
to consider what duties are delegable, an inquiry that frequently involves the organic statutes that
grant authority to federal officials. In the context of the Vacancies Act itself, there are few cases
considering what types of duties may be nondelegable. Those courts that have considered the
issue have general y upheld the ability of government officials to perform the delegated duties of

Intelligence, slip op. at 6, https://www.justice.gov/olc/file/1220586/download (Op. O.L.C. Nov. 15, 2019). See
generally, e.g., Cisneros v. Alpine Ridge Grp., 508 U.S. 10, 18 (1993) (“ [T]he use of such a ‘notwithstanding’ clause
clearly signals the drafter’s intention that the provisions of the ‘notwithstanding’ section override conflicting provisions
of any other section.”).
228 28 U.S.C. § 508.
229 Cf. United States v. Lucido, 373 F. Supp. 1142, 1150–51 (E.D. Mich. 1974) (considering how to reconcile 28 U.S.C.
§ 508 with a prior version of the Vacancies Act); Authority of the President to Name an Acting Attorney Gen., 31 Op.
O.L.C. 208, 209–10 (2007) (holding President’s designation of an acting officer under the Vacancies Act would trump
Attorney General’s designation of a successor under 28 U.S.C. § 508(b)).
230 See, e.g., Accountability for Acting Officials Act , H.R. 6689, 116th Cong. § 2(g) (2020) (“[A]ny statutory provision
. . . that contains a non-discretionary order or directive to designate an officer or employee to perform the functions and
duties of a specified office temporarily in an acting capacity shall be the exclusive means for temporarily authorizing an
acting official to perform the functions and duties of such office.”).
231 See 5 U.S.C. § 3348; supra “What Are the “Functions and Duties” of an Office?”
232 See, e.g., Stand Up for California! v. U.S. Dep’t of Interior, No. 19-5285, 2021 U.S. App. LEXIS 10929, at *10–11
(D.C. Cir. Apr. 16, 2021); United States v. Harris County, No. 4:16-CV-2331, 2017 U.S. Dist. LEXIS 229179, at *7
n.5 (S.D. T ex. Apr. 26, 2017).
233 See, e.g., Guidance on Application of Fed. Vacancies Reform Act of 1998, 23 Op. O.L.C. 60, 72 (1999). Of course,
other statutes or regulations might affect the analysis of whether a particular delegation of authority, or a particular
exercise of delegated authority, is lawful. See, e.g., Utah Ass’n of Ctys. v. Bush, 316 F. Supp. 2d 1172, 1196 (D. Utah
2004) (considering the scope of an executive order delegating “authority otherwise vested” in the President to perform
certain functions); Action for Boston Cmty. Dev. v . Shalala, 983 F. Supp. 222, 228–29 (D. Mass. 1997) (considering
whether agency had offered sufficient evidence to demonstrate Secretary of Health and Human Services had properly
delegated decisionmaking authority to regional administrator).
234 L.M.-M. v. Cuccinelli, 442 F. Supp. 3d 1, 34 (D.D.C. 2020); see also Nw. Immigrant Rights Project v. U.S.
Citizenship & Immigr. Servs., No. 19-3283, 2020 U.S. Dist. LEXIS 187410 , at *53 (D.D.C. Oct. 9, 2020) (concluding
a duty delegated in an order that was in effect “ during the 180-day window proceeding the vacancy” was not a
“function or duty” vested exclusively in the Secretary for purposes of enforcing the Vacancies Act).
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a vacant office, so long as the delegation is otherwise lawful under the legal principles that
ordinarily govern delegations.235
Outside the context of the Vacancies Act, courts often presume that delegation is permissible
“absent affirmative evidence of a contrary congressional intent.”236 The Supreme Court has
recognized that an agency head may have so many statutory responsibilities that it would be
unreasonable to think that Congress intended the head to personal y perform—or even oversee
the performance of—every single assigned task.237 In the words of the Court, internal agency
delegation may be “necessary for prompt and expeditious action” in circumstances where delay
could cause “injury beyond repair.”238
The general presumption of delegability may be overcome in certain circumstances. A statute that
expressly prohibited delegation of a duty—for example, stating that a duty “‘may only be
delegated to,’ ‘may not [be] delegate[d],’ ‘may not be reledegated,’ ‘shal not be redelegated,’ or is
‘not subject to delegation,’”—would likely render that duty nondelegable.239 Some statutes may
implicitly preclude delegation.240 For example, courts have recognized that some statutes may
limit the class of officers to whom a duty is delegable, meaning by implication that the duties are
not delegable outside of that specified class.241
To take another example, one federal district court ruled in February 2019 that a statute implicitly
precluded the delegation of a specific duty in the context of a Department of the Interior decision

235 See, e.g., Stand Up for California!, 2021 U.S. App. LEXIS 10929, at *19–20; Schaghticoke T ribal Nation v.
Kempthorne, 587 F. Supp. 2d 389, 421 (D. Conn. 2008), aff’d, 587 F.3d 132 (2d Cir. 2009); Office of T hrift
Supervision v. Paul, 985 F. Supp. 1465, 1474–75 (S.D. Fla. 1997).
236 U.S. T elecom Ass’n v. FCC, 359 F.3d 554, 565 (D.C. Cir. 2004). See also, e.g., United States v. Mango, 199 F.3d
85, 91–92 (2d Cir. 1999) (concluding, in the face of statutory ambiguity, that subdelegation is permissible); Loma
Linda Univ. v. Schweiker, 705 F.2d 1123, 1128 (9th Cir. 1983) (“ Express statutory authority for delegation is not
required . . . .”). But see Cudahy Packing Co. v. Holland, 315 U.S. 357, 361 (1942) (holding officer could not delegate
subpoena power, where 29 U.S.C. § 209 and 15 U.S.C. § 49 provided that the officer “shall have power” of subpoena).
In Cudahy Packing Co., the Court considered whether the delegation of the subpoena power was authorized by a statute
providing that “[t]he principal office of the [officer] shall be in the District of Columbia, but he or his duly authorized
representative may exercise any or all of his powers in any place. ” Id. at 360 (quoting 29 U.S.C. § 204). T he Court
rejected this contention, stating that “[a] construction of the Act which would thus permit the Administrator to delegate
all his duties, including those involving administrative judgment and discretion which the Act has in terms given only
to him, can hardly be accepted unless plainly required by its words.” Id. at 361.
237 Fleming v. Mohawk Wrecking & Lumber Co., 331 U.S. 111, 122 –23 (1947).
238 Id.
239 Stand Up for California! v. U.S. Dep’t of Interior, 298 F. Sup p. 3d 136, 143 (D.D.C. 2018), aff’d, 2021 U.S. App.
LEXIS 10929. See also, e.g., 12 U.S.C. § 1790d(i)(4)(A) (“ Except as provided in subparagraph (B), the [National
Credit Union Administration] Board m ay not delegate the authority of the Board under this subsection.”) (emphasis
added); 25 U.S.C. § 2706(a) (“ T he [National Indian Gaming] Commission shall have the power, not subject to
delegation . . . .”) (emphasis added).
240 Cf., e.g., Fed. Vacancies Reform Act of 1998 - Assistant Attorney Gen. for the Office of Legal Counsel, U.S. Dep’t
of Justice, B-310780, 2008 U.S. Comp. Gen. LEXIS 101, at *12 (Comp. Gen. June 13, 2008) (saying that finding
nondelegability “ requires language that clearly signals duties or functions that cannot be delegated, such as providin g
final approval or final decisionmaking authority in a particular position ”).
241 See, e.g., United States v. Giordano, 416 U.S. 505, 507–08 (1974) (holding “ Congress did not intend the power to
authorize wiretap applications to be exercised by any individuals other than the Attorney General or an Assistant
Attorney General specially designated by him”); Halverson v. Slater, 129 F.3d 180, 185 (D.C. Cir. 1997) (concluding
statute that authorized T ransportation Secretary to “delegate the duties and powers conferred by this subtitle to any
officer, employee, or member of the Coast Guard,” 46 U.S.C. § 2104(a), prohibited the “ delegation of . . . functions to a
non-Coast Guard official”).
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to take property into trust at the request of the Santa Ynez Band of Chumash Mission Indians.242
Federal law authorizes the Secretary of the Interior to acquire land in trust “for the purpose of
providing land for Indians.”243 Pursuant to agency regulations delegating this authority and
outlining procedures for its use, the Assistant Secretary-Indian Affairs (AS-IA) assumed
jurisdiction over an administrative appeal reviewing the agency’s decision to acquire the land for
this tribe.244 However, while the internal appeal was pending, the AS-IA resigned.245 The Principal
Deputy Assistant Secretary-Indian Affairs (PDAS) initial y served as Acting AS-IA as the first
assistant under the Vacancies Act, but “reverted” to his position as PDAS after 210 days.246 After
the expiration of the 210-day period, the PDAS issued a decision rendering the land acquisition
final, citing “the authority delegated to [the PDAS] by 25 C.F.R. § 2.20(c).”247 This regulation
authorized the AS-IA to issue decisions in administrative appeals, but also al owed the AS-IA to
assign decisionmaking authority to “a Deputy.”248 The regulation further said that if a decision “is
signed by the [AS-IA], it shal be final . . . and effective immediately.”249 By contrast, if a Deputy
signed the decision, the regulation provided that such a decision could be appealed to the Bureau
of Indian Affairs.250
As framed by the trial court, the relevant question was therefore “whether 25 C.F.R. § 2.20(c)
exclusively reserves with the [AS-IA] the authority to issue final decisions . . . , or whether the
[AS-IA’s] authority to issue final appeals decisions is delegable to a Deputy.”251 Although the
regulation did not explicitly state that this authority was exclusive to the AS-IA or otherwise
expressly preclude delegation,252 the court nonetheless held that the duty to render final decisions
was exclusive to the AS-IA and nondelegable for the purposes of the Vacancies Act.253 The court
observed that the regulation expressly stated that if a decision were “signed by a Deputy to the
[AS-IA],” it would be subject to further appeal, meaning that “only” the AS-IA “may issue a final
decision on the appeal.”254 The court further concluded that, in light of “the history and purpose
behind the [AS-IA’s] authority over appeals,” the regulation was “intended to restrict the [AS-
IA’s] permissible delegation authority.”255 Final y, the court looked to the nature of the chal enged
function and inferred that the agency “contemplated that . . . [this] authority . . . would be used
with restraint,” suggesting that the duty should not “be freely delegable.”256
A different federal district court decision from September 2020 held that an agency delegation
violated the Vacancies Act based on the specific factual circumstances.257 That case involved a

242 Crawford-Hall v. United States, 394 F. Supp. 3d 1122, 1137 (C.D. Cal. 2019).
243 25 U.S.C. § 5108.
244 Crawford-Hall, 394 F. Supp. 3d at 1129.
245 Id.
246 Id.
247 Id.
248 25 C.F.R. § 2.20(c) (2018).
249 Id.
250 Id.
251 Crawford-Hall, 394 F. Supp. 3d at 1136 (emphasis added).
252 See id. at 1143.
253 Id. at 1137.
254 Id.
255 Id. at 1139.
256 Id. at 1147.
257 See Bullock v. U.S. Bureau of Land Mgmt., 489 F. Supp. 3d 1112, 1126 (D. Mont. 2020).
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series of orders delegating the duties of ten positions within the Department of the Interior,
including the Director of the U.S. Bureau of Land Management (BLM).258 The initial order issued
by the outgoing Secretary of the Interior in January 2017 operated temporarily, with a fixed end
date.259 However, various Secretaries, both acting and Senate-confirmed, amended and extended
the delegation order “thirty-two times over the next three years.”260 In May 2020, the official who
was exercising the duties of the BLM Director pursuant to the amended order, Wil iam Perry
Pendley, issued a new memo clarifying BLM’s “order of succession” and designating himself as
the first assistant to the BLM Director.261 The memo also delegated to Pendley the authority to
perform the Director’s duties.262 Once his authority to act under the Secretary’s order expired,
Pendley performed the delegated duties of the BLM Director pursuant to this memo.263
Montana officials sued BLM in July 2020, arguing that Pendley was unlawfully serving as Acting
BLM Director in violation of the Vacancies Act.264 The district court agreed with the chal engers,
saying that under the circumstances, the agency’s attempt to designate Pendley as “an ‘official
performing the Director’s duties under the Secretary’s delegation’” rather than the “‘Acting
Director’” was merely “wordplay,” representing “a distinction without a difference.”265 The court
looked to two factors to conclude that Pendley did in fact “operate[] as the Acting BLM Director”
in violation of the Vacancies Act.266 The court noted that, first, “Pendley actual y exercised
powers reserved to the BLM Director,” and second, “the Executive Branch repeatedly presented
Pendley as Acting BLM Director.”267 The duration of the delegations also seemed to be a factor in
the court’s decision, with the court stating, “[t]he President cannot shelter unconstitutional
‘temporary’ appointments for the duration of his presidency through a matryoshka doll of
delegated authorities.”268 This decision was fact-specific, and it remains to be seen whether any
other courts wil similarly look past agency designations to conclude that officials exercising
delegated authority are in fact serving as acting officials who must comply with the Vacancies
Act.
If Congress were concerned about agencies delegating duties of vacant offices, it could amend
either the Vacancies Act or the organic acts creating those duties. For instance, Congress could
amend the definition of “function or duty” in the Vacancies Act to more clearly prohibit
delegation once an office becomes vacant.269 Congress could also enact other statutory limitations
on the ability of certain officers to delegate their authority.270 There are already a number of

258 Id. at 1118.
259 Id.
260 Id.
261 Id. at 1126.
262 Id.
263 Id. at 1126–27.
264 Id. at 1119.
265 Id. at 1125, 1127.
266 Id. at 1126–27.
267 Id. at 1128.
268 Id. at 1126. T he court also noted that other courts had found “recent” violations of the Vacancies Act in other
executive offices. Id.
269 See 5 U.S.C. § 3348. As discussed, however, at least one district court held that the Vacancies Act already prohibits
the performance of delegated duties unless the delegation complied with the 180 -day lookback period. L.M.-M., 442 F.
Supp. 3d at 34.
270 See, e.g., 42 U.S.C. § 3535(q)(2) (“ The Secretary may delegate authority to approve a waiver of a regulation only to
an individual of Assistant Secretary rank or equivalent rank, who is authorized to issue the regulation to be waived. ”).
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statutes that grant authority to executive branch officials but expressly provide that those
authorities may not be delegated, or may only be delegated to specific officials.271 Beyond placing
additional substantive limitations on the types of duties that are delegable, Congress could also
create procedural limitations on the way in which duties may be delegated.272 For example, some
statutes require delegations to be in writing,273 while others provide that duties may only be
delegated if certain conditions are met.274
Constitutional Considerations
Some have questioned whether the Vacancies Act is consistent with the U.S. Constitution’s
Appointments Clause, at least with respect to particular types of acting service.275 The
Appointments Clause creates specific requirements for the appointment of “Officers of the United
States”: general y, officers must be appointed through presidential nomination and Senate
confirmation.276 However, while principal officers may only be appointed through Senate
confirmation, Congress can vest the appointment of “inferior Officers . . . in the President alone,
in the Courts of Law, or in the Heads of Departments.”277 Accordingly, to determine whether an
official’s appointment complied with the Appointments Clause, courts ask whether the official is
a principal officer, inferior officer, or a “non-officer employee.”278 The Supreme Court has said
that a federal official is a principal or inferior officer subject to the Appointments Clause if the
official (1) performs duties that are “continuing and permanent, not occasional or temporary”279;
and (2) exercises “significant authority pursuant to the laws of the United States.”280 To

271 See, e.g., 21 U.S.C. § 360c(i)(1)(E)(iii) (“ The responsibilities of the Director under this subparagraph may not be
delegated.”); see also supra note 239. Cf., e.g., 26 U.S.C. § 7701(a)(11)(A) (“ The term ‘Secretary of the Treasury’
means the Secretary of the T reasury, personally, and shall not include any delegate of his.”).
272 See generally Panama Refining Co. v. Ryan, 293 U.S. 388, 448 (1935) (noting that where Congress has delegated
legislative power “subject to a condition, it is a requirement of constitutional government that the condit ion be
fulfilled”).
273 See, e.g., 3 U.S.C. § 301 (authorizing President to delegate functions but requiring delegation to “be in writing,
[and] . . . be published in the Federal Register”); 10 U.S.C. § 138(c) (“[A]n Assistant Secretary may not issue an orde r
to a military department unless . . . the Secretary of Defense has specifically delegated that authority to the Assistant
Secretary in writing; and . . . the order is issued through the Secretary of the military department concerned.”).
274 See, e.g., Pub. L. No. 104-53, § 211, 109 Stat. 468, 535 (1995) (transferring certain functions of Comptroller
General to Director of Office of Management and Budget and providing that “[t]he Director may delegate any such
function, in whole or in part, to any other agency or agencies if the Director determines that such delegation would be
cost-effective or otherwise in the public interest”).
275 See, e.g., NLRB v. SW Gen., Inc., 137 S. Ct. 929, 946 (2017) (T homas, J., concurring) (“ T he [Vacancies Act]
authorizes the President to appoint both inferior and principal officers without first obtaining the advice and consent of
the Senate. Appointing inferior officers in this manner raises no constitutional problems. . . . Appointing principal
officers under the [Vacancies Act], however, raises grave constitutional concerns because the Appointments Clause
forbids the President to appoint principal officers without the advice and consent of the Senate. ”).
276 U.S. CONST. art. II, § 2, cl. 2 (“[T he President] shall nominate, and by and with the Advice and Consent of the
Senate, shall appoint . . . all other Officers of the United States, whose Appointments are not herein otherwise provided
for, and which shall be established by Law: but the Congress may by Law vest the Appointment of such inferior
Officers, as they think proper, in the President alone, in the Courts of Law, or in the Heads of Departments. ”). See
generally CRS Report R44083, Appointm ent and Confirm ation of Executive Branch Leadership: A n Overview, by
Henry B. Hogue and Maeve P. Carey.
277 U.S. CONST. art. II, § 2, cl. 2 (emphasis added); see also, e.g., Edmond v. United States, 520 U.S. 651, 662–63
(1997) (discussing distinction between principal and inferior officers).
278 See Lucia v. SEC, 138 S. Ct. 2044, 2051 (2018).
279 United States v. Germaine, 99 U.S. 508, 511–12 (1878).
280 Buckley v. Valeo, 424 U.S. 1, 126 (1976) (per curiam).
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distinguish a principal officer from an inferior officer, the Supreme Court asks whether the
officer’s “work is directed and supervised at some level by others who were appointed by
presidential nomination with the advice and consent of the Senate.”281 Stated another way, the
relevant question is whether the officer has a “superior other than the President.”282
Some have argued that temporary service under the Vacancies Act might violate the
Appointments Clause by al owing government officials to act as “Officers of the United States”
absent appointment through the proper constitutional processes.283 Justice Thomas expressed this
concern in a concurring opinion in NLRB v. SW General, Inc., arguing that the President could not
act alone to appoint someone to serve as the NLRB’s general counsel.284 A person performing the
duties of an office that is general y subject to Senate confirmation wil likely be performing—
perhaps temporarily—continuing statutory duties that may qualify as “significant” for purposes of
the Appointments Clause.285 Thus, acting officials performing these continuing, significant duties
could thereby qualify as officers subject to constitutional appointment procedures.286 If their
performance of those duties is not supervised by anyone other than the President, they might even
be viewed as principal officers.287 If acting officials could be considered principal officers when
they perform a principal officer’s duties, they would have to be appointed through Senate
confirmation.288 Under the Vacancies Act, however, acting officials are not appointed to serve
through advice-and-consent procedures, but instead may serve pursuant to the operation of the
statute or presidential designation alone.289 Another possible concern not raised by Justice
Thomas is that even if acting officials could be considered inferior officers rather than principal
officers, the Vacancies Act may violate the Appointments Clause to the extent that it al ows non-
officer employees to automatical y serve as acting officials by virtue of being first assistants.290

281 Edmond, 520 U.S. at 663.
282 NLRB v. SW Gen., Inc., 137 S. Ct. 929, 947 (2017) (T homas, J., concurring). Cf. Morrison v. Olson, 487 U.S. 654,
671–72 (1988) (relying on four factors to conclude that an official was an inferior officer: that the official (1) was
“subject to removal by a higher Executive Branch official”; (2) “perform[ed] only certain, limited duties”; (3) held an
office that was “ limited in jurisdiction”; and (4) held an office that was “ limited in tenure”).
283 See, e.g., Patrick v. Whitaker, 426 F. Supp. 3d 182, 184–85 (E.D.N.C. 2019) (noting plaintiff’s argument “ that Mr.
Whitaker’s designation as Acting Attorney General violated the Appointments Clause”); Joshua L. Stayn, Note, Vacant
Reform : Why the Federal Vacancies Reform Act of 1998 Is Unconstitutional, 50 DUKE L.J. 1511, 1513 (2001).
284 See SW Gen., Inc., 137 S. Ct. at 948.
285 Id. at 946–47. See also, e.g., Nw. Immigrant Rights Project v. U.S. Citizenship & Immigr. Servs., No. 19 -3283,
2020 U.S. Dist. LEXIS 187410, at *68 (D.D.C. Oct. 9, 2020) (“ [T]he Acting Secretary of the Department undoubtedly
exercises significant governmental authority[.]”).
286 See SW Gen., Inc., 137 S. Ct. at 947.
287 See id. at 947–48; see also Freytag v. Comm’r, 501 U.S. 868, 882 (1991) (“Special trial judges are not inferior
officers for purposes of some of their duties . . . , but mere employees with respect to other responsibilities. T he fact
that an inferior officer on occasion performs duties that may be performed by an employee not subject to the
Appointments Clause does not transform his status under the Constitution. ”).
288 See SW Gen., Inc., 137 S. Ct. at 947–48.
289 See 5 U.S.C. § 3345.
290 Cf. E. Garrett West, Note, Congressional Power over Office Creation, 128 YALE L.J. 166, 219 (2018) (discussing
the “automatic-promotion mechanism” in the context of a first assistant who is an inferior officer performing the duties
of a principal office).
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A number of trial courts have concluded that officials temporarily acting under the Vacancies Act
did not violate the Appointments Clause.291 A few different theories have been offered to explain
why acting service under the Vacancies Act does not violate the Appointments Clause—although
some of these theories may justify only certain categories of service authorized by the Vacancies
Act. First, for some officers who have already been appointed in accordance with the
Appointments Clause, acting service could be seen as a conditional duty of the office to which
they were original y appointed.292 For example, a statute outlining the duties of the Senate-
confirmed Deputy Secretary of Defense states that the Deputy wil “act for, and exercise the
powers of” the Secretary of Defense if the Secretary “dies, resigns, or is otherwise unable to
perform the functions and duties of the office.”293 Under these circumstances, acting service can
be seen as a contingent duty of the office—a duty that the President and Congress were aware of
when appointing the Deputy Secretary.294 In one opinion, the OLC argued that the Vacancies Act
similarly makes acting service “part and parcel of the office” for all officers appointed after the
enactment of the Vacancies Act, suggesting that the provisions authorizing acting service could be
seen as creating a conditional duty for any covered offices.295
Another argument broadly justifying acting service is based on two Supreme Court cases that
may suggest that when a government official temporarily performs duties, the temporary nature
of the duties may prevent the official from being considered an officer, rather than an
employee.296 In United States v. Germaine and Auffmordt v. Hedden, the Supreme Court held that
officials who were only occasional y asked to act on behalf of the government should not be
considered constitutional officers.297 The Court has since emphasized that to qualify as an officer,
an official must “hold a continuing office established by law,” and may not serve only
“temporarily or episodical y.”298 However, in both Germaine and Auffmordt, the officials were
performing duties that, per statute, were themselves temporary.299 It is not clear whether the same

291 See, e.g., Guedes v. Bureau of Alcohol, T obacco, Firearms, & Explosives, 356 F. Supp. 3d 109, 153 (D.D.C. 2019)
(holding that Acting Attorney General serving under the Vacancies Act did not violate the Appointments Clause), aff’d
on other grounds, 920 F.3d 1, 12 (D.C. Cir. 2019) (per curiam); United States v. Santos-Caporal, No. 1:18 CR 171
AGF (ACL), 2019 U.S. Dist. LEXIS 19282, at *11–12, 17 (E.D. Mo. Jan. 9, 2019) (same). But see Patrick v. Whitaker,
426 F. Supp. 3d 182, 186 (E.D.N.C. 2019) (“ T he Court is inclined to agree with plaintiff that the President ’s
designation of Mr. Whitaker as a principal officer pursuant to the [Vacancies Act] ‘raises grave constitutional concerns
. . . .’ However, because the Court concludes that plaintiff lacks standing, it dismisses his claims.” (quoting SW Gen.,
Inc., 137 S. Ct. at 946)).
292 See, e.g., West, supra note 290, at 219.
293 10 U.S.C. § 132(b).
294 See, e.g., Ben Miller-Gootnick, Note, Boundaries of the Federal Vacancies Reform Act, 56 HARV. J. ON LEGIS. 459,
491 n.163 (2019).
295 Designation of Acting Director of the Office of Management and Budget, 27 Op. O.L.C. 121, 122 n.3 (2003); see
also 5 U.S.C. § 3345(a)(2) (“[T]he President (and only the President) may direct a person who serves in an office for
which appointment is required to be made by the President, by and with the advice and consent of the Senate, to
perform the functions and duties of the vacant office temporarily in an acting capacity . . . .”).
296 See Auffmordt v. Hedden, 137 U.S. 310, 327 (1890) (holding that a merchant appraiser who “ acts only occasionally
and temporarily” was not a constitutional officer); United States v. Germaine, 99 U.S. 508, 512 (1878) (holding that a
surgeon who exercised “ occasional and intermittent” duties, acting only “when called on . . . in some special case” was
not a constitutional officer).
297 See Auffmordt, 137 U.S. at 327; Germaine, 99 U.S. at 512.
298 Lucia v. SEC, 138 S. Ct. 2044, 2053 (2018).
299 See Auffmordt, 137 U.S. at 327; Germaine, 99 U.S. at 512.
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principles would apply to an official temporarily performing continuing statutory duties—
although some have suggested that they might.300
A different Supreme Court case seems more directly on point and has been cited for the
proposition that officials temporarily serving in a continuing office should be considered, at most,
inferior officers who may be appointed by the President or a department head acting alone.301 In a
case from the late 1800s, United States v. Eaton, the Supreme Court held that it did not violate the
Appointments Clause for a vice-consul appointed by the Secretary of State to “temporarily
perform[] the functions of the consular office” during the il ness of the consul-general.302 The
Court said that where “the subordinate officer is charged with the performance of the duty of the
superior for a limited time and under special and temporary conditions, he is not thereby
transformed into the superior and permanent official.”303 Eaton suggests that the Court views
temporary acting service differently than the permanent performance of duties.304
On this basis, the OLC has argued that acting officials temporarily performing a principal
officer’s duties should be considered only inferior officers, and that when the President designates
an official to serve under the Vacancies Act, he is appointing an inferior officer consistently with
the Appointments Clause.305 The Vacancies Act says that the President may “direct” Senate-
confirmed officers and senior agency officials to serve as acting officials, rather than saying that
the President may “appoint” these officials to serve.306 Nonetheless, the OLC and at least one trial
court have concluded that this provision should be interpreted as authorizing an appointment
consistent with Appointments Clause procedures.307
The OLC’s Eaton-based argument may have some limitations. For example, the argument does
not, on its own, appear to account for first assistants who automatical y serve pursuant to the

300 United States v. Peters, No. 6:17-CR-55-REW-HAI-2, 2018 U.S. Dist. LEXIS 204067, at *8 n.11 (E.D. Ky. Dec. 3,
2018) (“[A]s an academic observation, the Supreme Court’s delineation of constitutional ‘Officer’ characteristics
suggests that an ‘Acting’ official could be considered a ‘lesser functionar[y]’ employee for which ‘the Appointments
Clause cares not a whit about who named them.’” (quotin g Lucia, 138 S. Ct. at 2051)).
301 Guedes v. Bureau of Alcohol, T obacco, Firearms, & Explosives, 356 F. Supp. 3d 109, 148 (D.D.C. 2019) (“[T] he
Supreme Court has held . . . that an official designated to perform the duties of a principal office temporarily, on an
acting basis, need not undergo Senate confirmation.”), aff’d on other grounds, 920 F.3d 1, 12 (D.C. Cir. 2019) (per
curiam).
302 United States v. Eaton, 169 U.S. 331, 343 (1898).
303 Id.
304 See also, e.g., Morrison v. Olson, 487 U.S. 654, 672 (1988) (holding that an independent counsel appointed under
the Ethics in Government Act of 1978 was an inferior officer that could permissibly be appointed by a court , and
noting, among other factors, that the office was “ limited in tenure,” citing Eaton). In SW General, Inc., Justice T homas
distinguished Eaton by noting that the official serving as acting General Counsel had “ served for more than three years
in an office limited by statute to a 4-year term, and he exercised all of the statutory duties of that office,” saying that
there was “nothing ‘special and temporary’ about Solomon’s appointment.” NLRB v. SW Gen., Inc., 137 S. Ct. 929,
946 n.3 (2017) (T homas, J., concurring). It is unclear whether the full Supreme Court or lower courts would take a
similar view of acting service or, for Justice T homas, what duration of service or amount of responsibility suffices to
transform an acting official. Cf., e.g., Bhatti v. Fed. Hous. Fin. Agency, 332 F. Supp. 3d 1206, 1218 (D. Minn. 2018)
(ruling that “ determining whether an otherwise validly appointed acting officer has served for ‘too long’ [in violation of
the Appointments Clause] is a non-justiciable political question”).
305 Designating an Acting Attorney General, slip op. at 9 (Op. O.L.C. Nov. 14, 2018),
https://www.justice.gov/olc/file/1112251/download; Designation of Acting Director of the Office of Management and
Budget, 27 Op. O.L.C. 121, 123–24 (2003).
306 See 5 U.S.C. § 3345(a)(2)–(3).
307 Designation of Acting Director of the Office of Management and Budget, 27 Op. O.L.C. 121, 124 –25 (2003);
Guedes v. Bureau of Alcohol, T obacco, Firearms, & Explosives, 356 F. Supp. 3d 109, 154 –55 (D.D.C. 2019), aff’d on
other grounds, 920 F.3d 1, 12 (D.C. Cir. 2019) (per curiam).
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operation of the Vacancies Act, because these officials are not appointed to the acting position in
accordance with the Appointments Clause.308 At least one scholar has argued that for first
assistants, automatic acting service should be viewed as “contingent powers appended to the
original office.”309 However, this contingent-duties and Eaton-based argument may not extend to
a first assistant who is a non-officer employee that was not appointed by the President or
department head.310 Eaton described the vice-consul temporarily fil ing the vacant office as an
inferior officer.311 Under the Appointments Clause, an inferior officer may be granted “significant
authority,” while a mere employee may not.312 Accordingly, it is not clear whether Eaton supports
the automatic designation of a non-officer employee to serve as an acting officer—even an
inferior officer. Further, some have argued that because Eaton involved a temporary absence—an
il ness—it should not be interpreted to authorize an inferior officer to fil a permanent vacancy in
a principal office.313
An alternative argument justifying acting service relies on the principle that Senate-confirmed
officers can be given additional germane duties, even if those duties were not contemplated at the
time the official was appointed.314 In Shoemaker v. United States, the Supreme Court rejected a
legal chal enge arguing that Congress violated the Appointments Clause by naming federal
officials to serve on a parks commission, unconstitutional y “appointing” the officers.315 The
Court, emphasizing that the Senate had already confirmed the officials to their existing positions,
held that Congress could grant these officers “additional duties, germane to the offices already
held by them” without providing for a new appointment.316
Similarly, in Weiss v. United States, the Supreme Court ruled that the Appointments Clause did
not require a second appointment for military judges, upholding a statute that al owed military
officials to assign commissioned officers to serve as judges.317 Thus, unlike in Shoemaker,
Congress had not granted new duties to specifical y named officials, but authorized an executive
branch official to designate “an indefinite number of military judges . . . from among hundreds or
perhaps thousands of qualified commissioned officers.”318 Accordingly, the Court was not sure
whether Shoemaker should control its analysis, saying that in Weiss, there was “no ground for
suspicion . . . that Congress was trying to both create an office and also select a particular

308 See 5 U.S.C. § 3345(a)(1).
309 West, supra note 290, at 219.
310 See id. (arguing that first assistants can lawfully serve if “(1) the inferior officer’s original appointment satisfies the
Appointments Clause (i.e., she was lawfully appointed by the P resident, head of the department, or a court of law) and
(2) the contingent duties are . . . ‘special and temporary’” (quoting United States v. Eaton, 169 U.S. 331, 343 (1898))).
311 See United States v. Eaton, 169 U.S. 331, 343 (1898); see also, e.g., Bandimere v. SEC, 844 F.3d 1168, 1173–74
(10th Cir. 2016) (describing the vice consul as an example of an inferior officer). T he vice-consul had been appointed
by the Secretary of State, the department head. Eaton, 169 U.S. at 337.
312 Buckley v. Valeo, 424 U.S. 1, 126 (1976) (per curiam).
313 E.g., T homas Berry, Is Matthew Whitaker’s Appointment Constitutional? An Examination of the Early Vacancies
Acts, YALE J. ON REG.: NOTICE & COMMENT (Nov. 26, 2018), https://www.yalejreg.com/nc/is-matthew-whitakers-
appointment-constitutional-an-examination-of-the-early-vacancies-acts-by-thomas-berry (noting that an official
stepping in during a temporary absence is still subject to the supervision of the absent official and asserting that early
executive branch practice treated short vacancies differently than more lengthy vacancies) .
314 See, e.g., id.
315 Shoemaker v. United States, 147 U.S. 282, 300–01 (1893).
316 Id. at 301.
317 Weiss v. United States, 510 U.S. 163, 176 (1994).
318 Id. at 174.
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individual to fil the office.”319 Even assuming that Shoemaker’s germaneness inquiry governed,
though, the Weiss Court concluded that the test was satisfied.320 Noting that “al military officers,
consistent with a long tradition, play a role in the operation of the military justice system,” the
Court held that “the role of military judge is ‘germane’ to that of military officer.”321
Some who do not believe that Eaton justifies acting service have argued that at least some
applications of the Vacancies Act can be justified on these grounds.322 If an official has been
appointed through a constitutional y compliant procedure, under Shoemaker and Weiss, Congress
may, through the Vacancies Act, authorize that official to take on additional duties, germane to
their original appointment, without triggering the need for a second appointment.323 However,
Shoemaker and Weiss both approved of assigning new duties to Senate-confirmed officers.324 It is
not clear that these cases could authorize acting service by an inferior officer or a non-officer
employee.325 In addition, acting service may not satisfy the germaneness test if the acting official
was confirmed to a position in another department and usual y performs duties unrelated to those
of the vacant office.326 Further, the Court’s decision in Weiss may suggest that if a statute al ows
an executive branch official to assign new duties to an official selected from a large pool of
candidates—like the Vacancies Act—Shoemaker’s germaneness inquiry might not apply.327
Shoemaker was concerned with curbing congressional encroachment on the executive branch’s
appointment authority.328 Accordingly, one could argue that the germaneness test should not be
invoked to validate a questionable appointment, particularly where the relevant statute looks like
the one considered in Weiss.
A court might also consider the long history of the Vacancies Act as support for the
constitutionality of acting service. In “separation-of-powers case[s]” interpreting the
Appointments Clause, the Supreme Court has put “significant weight upon historical practice.”329
One district court upholding the constitutionality of an acting appointment under the Vacancies
Act highlighted the “unbroken string of legislative enactments” authorizing acting service starting
in 1792.330 While there has been some “interbranch conflict” regarding various iterations of the
Vacancies Act,331 the executive branch has agreed that at least some temporary appointments are
constitutional.332 The executive branch has even, at times, argued that the President has the

319 Id.
320 Id.
321 Id. at 175–76.
322 See, e.g., T homas A. Berry, S.W. General: The Court Reins in Unilateral Appointments, 2017 CATO SUP. CT. REV.
151, 178–79 (2017); see also Designation of Acting Director of the Office o f Management and Budget, 27 Op. O.L.C.
121, 122 n.3 (2003).
323 See, e.g., Berry, supra note 313.
324 Weiss, 510 U.S. at 170; Shoemaker v. United States, 147 U.S. 282, 301 (1893).
325 See, e.g., Berry, supra note 313 (“Matthew Whitaker was not serving in a Senate-confirmed position at the time of
his ascension, and so the Shoem aker/Weiss doctrine cannot apply to him.”).
326 See Shoemaker, 147 U.S. at 301.
327 Weiss, 510 U.S. at 174.
328 See Shoemaker, 147 U.S. at 301.
329 NLRB v. Noel Canning, 573 U.S. 513, 514 (2014).
330 Guedes v. Bureau of Alcohol, T obacco, Firearms, & Explosives, 356 F. Supp. 3d 109, 148 (D.D.C. 2019), aff’d on
other grounds, 920 F.3d 1, 12 (D.C. Cir. 2019) (per curiam). Accord, e.g., Designating an Acting Attorney General, slip
op. at 10–16 (Op. O.L.C. Nov. 14, 2018), https://www.justice.gov/olc/file/1112251/download.
331 NLRB v. SW Gen., Inc., 137 S. Ct. 929, 935 (2017).
332 See, e.g., id. at 935–36; T he Vacancies Act, 22 Op. O.L.C. 44 (1998).
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inherent power “to make temporary . . . appointments in cases of need without conforming to the
requirements of the Appointments . . . Clause.”333 Accordingly, historical practice suggests that
Congress and the executive branch have considered at least some forms of acting service to be
constitutional. And in particular, since 1868, prior versions of the Vacancies Act have provided
for first assistants to automatical y take on acting service.334
It is likely that litigants chal enging the validity of acting officials’ service wil continue to raise
constitutional arguments under the Appointments Clause. Further judicial consideration of the
issue may shed light on what types of acting officials are constitutional y problematic and which
of the theories described above may justify acting service.

Author Information

Valerie C. Brannon

Legislative Attorney

Disclaimer
This document was prepared by the Congressional Research Service (CRS). CRS serves as nonpartisan
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333 T he Constitutional Separation of Powers Between the President and Congress, 20 Op. O.L.C. 124, 161–62 (1996).
Cf., e.g., Williams v. Phillips, 360 F. Supp. 1363, 1369 (D.C. Cir. 1973) (saying that if such a power existed, it would
be only in “emergency situations,” and pointing out “[s]everal constitutional problems . . . presented by a temporary
appointive power”).
334 See Act of July 23, 1868, ch. 227, 15 Stat. 168.
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