

 
 Legal Sidebari 
 
Sex Offender Registration and Notification 
Act (SORNA) Survives Renewed 
Constitutional Challenges 
May 19, 2020 
Introduction 
The U.S. Court of Appeals for the Fourth Circuit (Fourth Circuit) in United States v. Wass recently 
overturned a district court decision that dismissed on constitutional grounds an indictment for violation of 
the Sex Offender Registration and Notification Act (SORNA). The Fourth Circuit concluded that the 
district court disregarded binding precedents in finding that the application of SORNA to Wass 
undermined the defendant’s nondelegation doctrine and ex post facto violation arguments. 
Background 
Passed in 2006, SORNA requires individuals with prior qualifying sex offense convictions to register as 
sex offenders with each jurisdiction in which they live, work, or go to school. It is a federal crime for sex 
offenders to travel in interstate or foreign commerce if they failed to register or to follow the steps 
necessary to update registration information. SORNA also authorized the Attorney General to determine 
the act’s application to offenders who were convicted of qualifying sex offenses before Congress enacted 
SORNA. The Attorney General extended coverage to pre-SORNA offenses in 2011. 
In 1995, the defendant in the case, Edward Jay Wass, was convicted of two felony sex offenses in Florida. 
Following 2006 passage of SORNA and its application to his Florida convictions by order of the Attorney 
General, a federal district court convicted Wass of failing to register as required, and travelling in 
interstate commerce. 
Constitutional Limitations: Nondelegation Doctrine and 
Ex Post Facto Clauses 
Under the nondelegation doctrine (discussed in this CRS Report), Congress may not delegate its 
legislative powers to another branch of government without guidance on how to use the delegated
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 authority. The Constitution’s Ex Post Facto Clause (discussed in this CRS InFocus) denies Congress and 
state legislatures the power to retroactively outlaw, or increase the punishment for, prior conduct. Wass 
argued, and the district court agreed, that the nondelegation doctrine barred application of SORNA to him 
and that the federal Ex Post Facto Clause precluded punishing him anew for his Florida sex offenses. 
However, the courts had already resolved these issues. 
The Supreme Court in Gundy v United States (discussed in CRS Report R45884) had rejected a 
nondelegation doctrine challenge to SORNA. Wass’s contention, that the 4-1-3 Gundy decision had 
resulted in no binding precedent, is at odds with the lowest common denominator rule for plurality High 
Court opinions, that is, “when a decision of the Court lacks a majority, the opinion of the justices 
concurring in the judgment on the narrowest grounds is to be regarded as the Court’s holding.” (For more 
on plurality opinions and what happens when five Supreme Court Justices can’t agree, see this CRS Legal 
Sidebar.) In Gundy, four members of the Court declared that Congress’s feasibility instruction supplied 
the Attorney General with a sufficient guiding standard; a fifth justice, Justice Alito concurred because he 
considered the result compatible with the Court’s prior decisions. 
As to the ex post facto challenge, in an early state sex offender registration case, the High Court stated 
that the Ex Post Facto Clause is grounded in a legislative intent to punish, and reaches an asserted 
regulatory or remedial regime only when its features are so draconian as to belie any but a punitive intent. 
The Fourth Circuit had already determined that SORNA was “nonpunitive” in purpose and effect for 
purposes of the Ex Post Facto Clause. 
Wass sought to use the rule of constitutional avoidance (discussed in this CRS Report) as a last attempt. 
This too, the Fourth Circuit found unavailing. The rule of constitutional avoidance is a canon of statutory 
construction that comes into play when a statute admits to two interpretations – one harmless and the 
other fraught with constitutional uncertainty. But the rule applies only in cases of statutory ambiguity, and 
the Fourth Circuit believed its earlier cases and those of the Supreme Court dispelled any uncertainty. 
 
Author Information 
 
Charles Doyle 
   
Senior Specialist in American Public Law 
 
 
 
 
 
Disclaimer 
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