(As amended Feb. 28, 1966, eff. July 1, 1966; Apr. 22, 1974, eff. Dec. 1, 1975; Pub. L. 94–64, § 3(5)–(10), July 31, 1975, 89 Stat. 371, 372; Apr. 30, 1979, eff. Aug. 1, 1979, and Dec. 1, 1980; Apr. 28, 1982, eff. Aug. 1, 1982; Apr. 28, 1983, eff. Aug. 1, 1983; Apr. 29, 1985, eff. Aug. 1, 1985; Mar. 9, 1987, eff. Aug. 1, 1987; Pub. L. 100–690, title VII, § 7076, Nov. 18, 1988, 102 Stat. 4406; Apr. 25, 1989, eff. Dec. 1, 1989; Apr. 26, 1999, eff. Dec. 1, 1999; Apr. 29, 2002, eff. Dec. 1, 2002; Apr. 30, 2007, eff. Dec. 1, 2007; Apr. 16, 2013, eff. Dec. 1, 2013.)