Section, added [Pub. L. 89–358, § 2], Mar. 3, 1966, [80 Stat. 16], § 1673; amended [Pub. L. 90–77, title III], §§ 302(a), 303(a), Aug. 31, 1967, [81 Stat. 185]; [Pub. L. 91–219, title II, § 202], Mar. 26, 1970, [84 Stat. 78]; [Pub. L. 92–540, title IV, § 401(2)], Oct. 24, 1972, [86 Stat. 1090]; [Pub. L. 93–508, title II, § 203], Dec. 3, 1974, [88 Stat. 1582]; [Pub. L. 94–502, title II], §§ 205, 211(7), Oct. 15, 1976, [90 Stat. 2387], 2388; [Pub. L. 95–202, title III, § 305(a)(2)], Nov. 23, 1977, [91 Stat. 1443]; [Pub. L. 96–466, title III], §§ 303–305, Oct. 17, 1980, [94 Stat. 2192], 2193; [Pub. L. 97–35, title XX, § 2003(b)(2)], Aug. 13, 1981, [95 Stat. 782]; [Pub. L. 97–295, § 4(40)], Oct. 12, 1982, [96 Stat. 1308]; [Pub. L. 97–306, title II], §§ 202(a), 203(a), Oct. 14, 1982, [96 Stat. 1433]; [Pub. L. 98–525, title VII, § 703(b)], Oct. 19, 1984, [98 Stat. 2564]; [Pub. L. 100–689, title I, § 111(a)(9)], Nov. 18, 1988, [102 Stat. 4172]; [Pub. L. 101–237, title IV, § 423(b)(1)], Dec. 18, 1989, [103 Stat. 2092]; renumbered § 3473 and amended [Pub. L. 102–83, § 5(a)], (c)(1), Aug. 6, 1991, [105 Stat. 406], related to disapproval of enrollment in certain courses.