Retroactive sex offender registration

1. Whether the Government may prosecute and continue to enforce a federal registration status against a pre-Act offender without identifying a legally operative duty on the relevant dates under the complete statutory framework, including 34 U.S.C. §§ 20913(d) and 20915(a)-(b), and 18 U.S.C. § 2250(a). 2. Whether due process permits courts and enforcement officials to use a later § 2250(a) conviction as proof of the antecedent registration duty upon which that conviction depended, where official jurisdiction-specific determinations materially call that duty into question. 3. Whether the First Amendment permits the Government, under threat of felony prosecution, to compel a person to appear, report, update, verify, and thereby assist in maintaining a public facing registry message that assigns a stigmatising legal status, where the legal predicate for that status remains disputed. 4. Whether Article I, § 1 permits Congress to vest in the Attorney General authority to determine SORNA ’ s applicability to pre-Act offenders under 34 U.S.C. § 20913(d), where that executive determination governs entry into a criminally enforced, public-facing registration regime and Gundy v. United States produced no majority rationale.