(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(1)–(3), July 31, 1975, 89 Stat. 370; Mar. 9, 1987, eff. Aug. 1, 1987; Apr. 22, 1993, eff. Dec. 1, 1993; Apr. 29, 2002, eff. Dec. 1, 2002; Apr. 26, 2011, eff. Dec. 1, 2011; Apr. 28, 2016, eff. Dec. 1, 2016.)