Section 13. 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.
Source: Const. of 1875, Art II, § 15.
(2013) Constitutional prohibition against enacting a law retrospective in its operation applies only to laws affecting civil rights and remedies and does not apply to criminal statutes. State v. Honeycutt, 421 S.W.3d 410 (Mo.banc). Top