Section, added Pub. L. 96–499, title XI, § 1102(a), Dec. 5, 1980, 94 Stat. 2660; amended Pub. L. 96–595, § 5(a), (b), Dec. 24, 1980, 94 Stat. 3467; Pub. L. 97–248, title II, § 220(a)–(e), title III, § 310(c)(3), (4), Sept. 3, 1982, 96 Stat. 475, 476, 599; Pub. L. 98–369, div. A, title I, § 42(a)(2), title VI, §§ 611(a)–(c), 612(b), 624(b)(1), July 18, 1984, 98 Stat. 556, 901–903, 911, 924; Pub. L. 99–514, title XVIII, § 1861, Oct. 22, 1986, 100 Stat. 2883, related to mortgage subsidy bonds. See section 143 of this title.