Section, added
Pub. L. 91–518, title IX, § 901(a), Oct. 30, 1970,
84 Stat. 1341; amended
Pub. L. 93–496, § 12, Oct. 28, 1974,
88 Stat. 1531;
Pub. L. 94–455, title XIX, § 1906(b)(13)(A), Oct. 4, 1976,
90 Stat. 1834;
Pub. L. 95–473, § 2(a)(2)(C), Oct. 17, 1978,
92 Stat. 1464;
Pub. L. 96–454, § 3(b)(1), Oct. 15, 1980,
94 Stat. 2012;
Pub. L. 97–261, § 6(d)(3), Sept. 20, 1982,
96 Stat. 1107;
Pub. L. 99–521, § 4(3), Oct. 22, 1986,
100 Stat. 2993, related to certain payments to National Railroad Passenger Corporation.