Section, added Pub. L. 98–369, div. A, title II, § 211(a), July 18, 1984, 98 Stat. 733; amended Pub. L. 99–514, title XVIII, § 1821(d)–(h), (r), Oct. 22, 1986, 100 Stat. 2839, 2840, 2843; Pub. L. 100–647, title I, § 1018(u)(47), Nov. 10, 1988, 102 Stat. 3593; Pub. L. 107–147, title VI, § 611(a), Mar. 9, 2002, 116 Stat. 61, related to reduction in certain deductions of mutual life insurance companies.

A prior section 809, added Pub. L. 86–69, § 2(a), June 25, 1959, 73 Stat. 121; amended Pub. L. 87–59, § 2(a), (b), June 27, 1961, 75 Stat. 120; Pub. L. 87–790, § 3(a), Oct. 10, 1962, 76 Stat. 808; Pub. L. 87–858, § 3(b)(3), (c), Oct. 23, 1962, 76 Stat. 1137; Pub. L. 88–272, title II, §§ 214(b)(4), 228(a), Feb. 26, 1964, 78 Stat. 55, 98; Pub. L. 91–172, title II, § 201(a)(2)(C), title IX, § 907(c)(2)(B), Dec. 30, 1969, 83 Stat. 558, 717; Pub. L. 94–455, title XV, § 1508(a), title XIX, §§ 1901(a)(98), (b)(1)(J)(iv), (L)–(N), 33(G), 1906(b)(13)(A), Oct. 4, 1976, 90 Stat. 1741, 1781, 1791, 1801, 1834; Pub. L. 97–248, title II, §§ 255(b)(2)–(4), 259(a), 264(c)(2), (3), Sept. 3, 1982, 96 Stat. 534, 538, 544; Pub. L. 97–448, title I, § 102(m)(1), Jan. 12, 1983, 96 Stat. 2374, related to general provisions regarding gain and loss from operations, prior to the general revision of this part by Pub. L. 98–369, § 211(a).

Repeal applicable to taxable years beginning after Dec. 31, 2004, see section 205(c) of Pub. L. 108–218, set out as an Effective Date of 2004 Amendment note under section 807 of this title.