When any State shall, by suitable legislation, make provision adequately to enforce the provisions of this subchapter and all regulations promulgated thereunder, the Secretary of the Interior may so certify, and then and thereafter said State may cooperate with the Secretary of the Interior in the enforcement of this subchapter and the regulations thereunder.

(Feb. 18, 1929, ch. 257, § 17, 45 Stat. 1225; 1939 Reorg. Plan No. II, § 4(f), eff. July 1, 1939, 4 F.R. 2731, 53 Stat. 1433.)