Retroactivity

Definition and stakes

Portrait of Antonin Scalia Antonin Scalia,  Hamdan v. Rumsfeld — Dissent Scalia (2006)

“ Any test of retroactivity will leave room for disagreement in hard cases, and is unlikely to classify the enormous variety of legal changes with perfect philosophical clarity. However, retroactivity is a matter on which judges tend to have 'sound...instinct [s] ,'...and familiar considerations of fair notice, reasonable reliance, and settled expectations offer sound guidance." Landgraf, 511 U.S., at 270 (opinion for the Court by Stevens, J.) . ”
Source: Wikisource

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