Acts of June 9, 1916, and February 26, 1919, referred to in subsec. (a), are acts June 9, 1916, ch. 137, 39 Stat. 218, and Feb. 26, 1919, ch. 47, 40 Stat. 1179, respectively, which are not classified to the Code.

The Act of August 28, 1937, referred to in subsec. (a), is act Aug. 28, 1937, ch. 876, 50 Stat. 874, which is classified principally to this subchapter. For complete classification of this Act to the Code, see Tables.

Public Law 93–205, referred to in subsecs. (a)(1) and (b)(1), is Pub. L. 93–205, Dec. 28, 1973, 87 Stat. 884, known as the Endangered Species Act of 1973, which is classified principally to chapter 35 (§ 1531 et seq.) of Title 16, Conservation. For complete classification of this Act to the Code, see Short Title note set out under section 1531 of Title 16 and Tables.

Section was enacted as part of the Wildfire Suppression Funding and Forest Management Activities Act, and also as part of the Consolidated Appropriations Act, 2018, and not as part of the Act of August 28, 1937, which comprises this subchapter.