Ex Post Facto — related Supreme Court cases
This page groups Supreme Court cases that involve the constitutional concept “Ex Post Facto”. Use it to explore related decisions and see how the same idea shows up across different cases.
“Ex Post Facto” is:
Prohibition on retroactively applying criminal laws to increase punishment.
Source: Article I, Sections 9 and 10 Where this concept definition/label comes from (for example, a constitutional provision or a reference framework).
Cases
These are cases where this concept was identified as relevant. Click a case to view its summary, holding, and supporting syllabus excerpts.
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Ellingburg v. United States
20th January 2026
The case directly addresses whether the application of the MVRA to Ellingburg violates the Ex Post Facto Clause.
