16 U.S.C. § 470h-4
Section, Pub. L. 89-665, title I, §112, as added Pub. L. 102-575, title XL, §40144014,, 106 Stat. 4761; amended Pub. L. 106-208, §5(a)(9), May 26, 2000, 114 Stat. 319, related to professional standards. See section 306131 of Title 54, National Park Service and Related Programs.