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Wrong Turn On The Ex Post Facto Clause, Paul D. Reingold, Kimberly Thomas

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The Ex Post Facto Clause bars any increase in punishment after the commission of a crime. But deciding what constitutes an increase in punishment can be tricky. At the front end of a criminal case, where new or amended criminal laws might lengthen prisoners’ sentences if applied retroactively, courts have routinely struck down such changes under the Ex Post Facto Clause. At the back end, however, where new or amended parole laws or policies might lengthen prisoners’ sentences in exactly the same way if applied retroactively, courts have used a different standard and upheld the changes under the Ex Post …