45 U.S.C. § 601
Section, Pub. L. 91–518, title VI, § 601, , 84 Stat. 1338; Pub. L. 92–316, § 9, , 86 Stat. 231; Pub. L. 93–146, § 12, , 87 Stat. 553; Pub. L. 93–496, § 8, , 88 Stat. 1530; Pub. L. 94–25, § 10, , 89 Stat. 92; Pub. L. 94–555, title I, § 102(a), (b), , 90 Stat. 2613, 2614; Pub. L. 95–421, §§ 2(a), (b)(1), 3, , 92 Stat. 923; Pub. L. 96–73, title I, § 122(a), (b)(1), , 93 Stat. 550, 551; Pub. L. 96–254, title II, §§ 208, 211, , 94 Stat. 414, 415; Pub. L. 97–35, title XI, §§ 1138, 1139(a), 1185, , 95 Stat. 652, 697; Pub. L. 97–468, title III, § 302(c), , 96 Stat. 2550; Pub. L. 99–272, title IV, § 4002, , 100 Stat. 106; Pub. L. 101–322, § 2, , 104 Stat. 295; Pub. L. 102–533, § 7(a), , 106 Stat. 3517, related to authorization and administration of appropriations for capital expenditures, new corridor development, operating expenses, and mandatory payments.