Section 302(a) of act Aug. 1, 1946, ch. 724, title I, as added Aug. 30, 1954, ch. 1073, § 1, as added Sept. 20, 1977,
Pub. L. 95–110, § 1,
91 Stat. 884; renumbered title I, Oct. 24, 1992,
Pub. L. 102–486, title IX, § 902(a)(8),
106 Stat. 2944, provided that the repeal of sections
2251 to
2257 is effective Sept. 20, 1977.