Mo. Const. art. I, § 13
Mo. Const. art. I, § 13. Ex post facto laws — impairment of contracts — irrevocable privileges
Length: 39 wordsOfficial source
That no ex post facto law, nor law impairing the obligation of contracts, or retrospective in its operation, or making any irrevocable grant of special privileges or immunities, can be enacted. [Effective - 27 Feb 1945 , see footnote]