Ut. Const. art. I, § 18
Utah Const. art. I, § 18. Attainder -- Ex post facto laws -- Impairing contracts.
Length: 31 wordsOfficial source
Article I, Section 18. [Attainder -- Ex post facto laws -- Impairing contracts.] No bill of attainder, ex post facto law, or law impairing the obligation of contracts shall be passed.