Changes

A [[law]] that makes illegal an act that was legal when committed, increases the penalties for an infraction after it has been committed, or changes the rules of [[evidence]] to make conviction easier. The American [[Constitution]] prohibits the making of ex post facto law by either [[Congress]] or the states.

An '''ex post facto law''' is a [[law]] that makes illegal an act that was legal when committed, increases the penalties for an infraction after it has been committed, or changes the rules of [[evidence]] to make conviction easier. The American [[Constitution]] prohibits the making of ex post facto law by either [[Congress]] or the states.

An important historical invocation of an ex-post-facto defense can be seen in the [[Nuremberg trials]], where some defendants argued that many of the crimes that they were charged with did not exist until they had been drafted by the [[Allies]].

An important historical invocation of an ex-post-facto defense can be seen in the [[Nuremberg trials]], where some defendants argued that many of the crimes that they were charged with did not exist until they had been drafted by the [[Allies]].