Section 506 (k), formerly § 506(h), of Pub. L. 92–607, as amended by Pub. L. 93–145, § 101, Nov. 1, 1973, 87 Stat. 532, and renumbered § 506(i) by Pub. L. 95–391, title I, § 108(a), Sept. 30, 1978, 92 Stat. 773, renumbered § 506(j) by Pub. L. 96–304, title I, § 101, July 8, 1980, 94 Stat. 889, and renumbered § 506(k) by Pub. L. 97–276, § 101(e), Oct. 2, 1982, 96 Stat. 1189, provided that, insofar as this section has application to Senators, the repeal is effective Jan. 1, 1973.