(As amended Feb. 28, 1966, eff. July 1, 1966; Apr. 24, 1972, eff. Oct. 1, 1972; Apr. 22, 1974, eff. Dec. 1, 1975; Pub. L. 94–64, § 3(31)–(34), July 31, 1975, 89 Stat. 376; Apr. 30, 1979, eff. Aug. 1, 1979, and Dec. 1, 1980; Pub. L. 97–291, § 3, Oct. 12, 1982, 96 Stat. 1249; Apr. 28, 1983, eff. Aug. 1, 1983; Pub. L. 98–473, title II, § 215(a), Oct. 12, 1984, 98 Stat. 2014; Pub. L. 99–646, § 25(a), Nov. 10, 1986, 100 Stat. 3597; Mar. 9, 1987, eff. Aug. 1, 1987; Apr. 25, 1989, eff. Dec. 1, 1989; Apr. 30, 1991, eff. Dec. 1, 1991; Apr. 22, 1993, eff. Dec. 1, 1993; Apr. 29, 1994, eff. Dec. 1, 1994; Pub. L. 103–322, title XXIII, § 230101(b), Sept. 13, 1994, 108 Stat. 2078; Apr. 23, 1996, eff. Dec. 1, 1996; Pub. L. 104–132, title II, § 207(a), Apr. 24, 1996, 110 Stat. 1236; Apr. 17, 2000, eff. Dec. 1, 2000; Apr. 29, 2002, eff. Dec. 1, 2002; Apr. 30, 2007, eff. Dec. 1, 2007; Apr. 23, 2008, eff. Dec. 1, 2008; Mar. 26, 2009, eff. Dec. 1, 2009; Apr. 26, 2011, eff. Dec. 1, 2011.)