No ex post facto law, bill of attainder nor law impairing the obligation of contracts shall be enacted by the legislature.[1]
N.M. Const. art. II, § 19 — under Bill of Rights.
N.M. Const. art. II, § 19
Retroactive Laws; Bills of Attainder; Impairment of Contracts
No ex post facto law, bill of attainder nor law impairing the obligation of contracts shall be enacted by the legislature.[1]