Section, added Pub. L. 91–172, title IX, § 907(c)(1), Dec. 30, 1969, 83 Stat. 716; amended Pub. L. 94–455, title XIX, §§ 1901(b)(25), 1906(b)(13)(A), Oct. 4, 1976, 90 Stat. 1798, 1834; Pub. L. 98–369, div. A, title II, § 211(b)(11), July 18, 1984, 98 Stat. 755; Pub. L. 99–514, title X, § 1024(c)(12), title XVIII, § 1899A(20), Oct. 22, 1986, 100 Stat. 2408, 2959; Pub. L. 101–239, title VII, § 7841(d)(16), Dec. 19, 1989, 103 Stat. 2429, related to special loss carryover rules.

Repeal applicable to losses arising in taxable years beginning after Dec. 31, 2017, see section 13511(c) of Pub. L. 115–97, set out as an Effective Date of 2017 Amendment note under section 381 of this title.