Section, added Pub. L. 94–455, title XXI, § 2134(a), Oct. 4, 1976, 90 Stat. 1926; amended Pub. L. 97–34, title VIII, § 802(a), Aug. 13, 1981, 95 Stat. 349; Pub. L. 97–448, title I, § 108(a), Jan. 12, 1983, 96 Stat. 2391; Pub. L. 98–612, § 1(a), (b)(3)(A), Oct. 31, 1984, 98 Stat. 3180, 3181; Pub. L. 99–514, title XI, §§ 1114(b)(3), 1151(c)(3), (g)(1), 1162(b), Oct. 22, 1986, 100 Stat. 2450, 2503, 2506, 2510; Pub. L. 100–647, title I, § 1011B(a)(31)(B), title IV, § 4002(a), (b)(1), Nov. 10, 1988, 102 Stat. 3488, 3643; Pub. L. 101–140, title II, § 203(a)(1), (2), Nov. 8, 1989, 103 Stat. 830; Pub. L. 101–239, title VII, § 7102(a)(1), Dec. 19, 1989, 103 Stat. 2305; Pub. L. 101–508, title XI, § 11404(a), Nov. 5, 1990, 104 Stat. 1388–473; Pub. L. 102–227, title I, § 104(a)(1), Dec. 11, 1991, 105 Stat. 1687; Pub. L. 108–311, title II, § 207(10), Oct. 4, 2004, 118 Stat. 1177, related to amounts received under qualified group legal services plans.

A prior section 120, act Aug. 16, 1954, ch. 736, 68A Stat. 39, related to statutory subsistence allowance received by police, prior to repeal by Pub. L. 85–866, title I, § 3(a), (c), Sept. 2, 1958, 72 Stat. 1607, effective with respect to taxable years ending after Sept. 30, 1958, but only with respect to amounts received as a statutory subsistence allowance for any day after Sept. 30, 1958.

Repeal effective Dec. 19, 2014, subject to a savings provision, see section 221(b) of Pub. L. 113–295, set out as an Effective Date of 2014 Amendment note under section 1 of this title.