ex post facto clause

Definition of "ex post facto clause"
  1. It's a provision found in Article I, Section 9 of the U.S. Constitution that prevents Congress from imposing retrospective laws
How to use "ex post facto clause" in a sentence
  1. The legislation was declared unconstitutional due to the ex post facto clause which prohibits the passage of retrospective laws.
  2. Since the ex post facto clause disallowed the creation of retroactive laws, the legislation was deemed unconstitutional.
  3. The lawmaker was against the new bill on the grounds it violated the ex post facto clause of the Constitution.

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