Ex post facto definition
Ex post facto means a law, act, rule or procedure passed after the occurrence of a fact or commission of an act, which retrospectively changes the legal consequences or relations of such fact or deed, See Black’s Law Dictionary.
Ex post facto means “from after the action” in Latin. An ex post facto law is one that retroactively changes the legal consequences (or status) of actions committed or relationships that existed prior to the enactment of the law. Such laws are specifically prohibited by the U.S. Constitution, Article I, Section 9. In Calder v. Bull (1798) the
Examples of Ex post facto in a sentence
Ex post facto law or law impairing the obligation of a contract shall be passed.