Article I § 10 Attainder; Ex Post Facto Laws; I...
Sec. 10.
No bill of attainder, ex post facto law or law impairing the obligation of contract shall be enacted.
History: Const. 1963, Art. I, § 10, Eff. Jan. 1, 1964 Former Constitution: See Const. 1908, Art. II, § 9.