Section, acts Feb. 11, 1903, ch. 544, § 1,
32 Stat. 823; June 25, 1910, ch. 428,
36 Stat. 854; Mar. 3, 1911, ch. 231, § 291,
36 Stat. 1167; Apr. 6, 1942, ch. 210, § 1,
56 Stat. 198; June 25, 1948, ch. 646, § 32(a),
62 Stat. 991; May 24, 1949, ch. 139, § 127,
63 Stat. 107; Dec. 21, 1974,
Pub. L. 93–528, § 4,
88 Stat. 1708, related to expedition of actions by the United States involving general public importance.