The original Federal Rules of Criminal Procedure were adopted by order of the Supreme Court on Dec. 26, 1944, transmitted to Congress by the Attorney General on Jan. 3, 1945, and became effective on Mar. 21, 1946.
The Rules have been amended Dec. 27, 1948, eff. Jan. 1, 1949; Dec. 27, 1948, eff. Oct. 20, 1949; Apr. 12, 1954, eff. July 1, 1954; Apr. 9, 1956, eff. July 8, 1956; Feb. 28, 1966, eff. July 1, 1966; Dec. 4, 1967, eff. July 1, 1968; Mar. 1, 1971, eff. July 1, 1971; Apr. 24, 1972, eff. Oct. 1, 1972; Nov. 20, 1972, eff. July 1, 1975, pursuant to
Pub. L. 93–595; Mar. 18, 1974, eff. July 1, 1974; Apr. 22, 1974, eff. in part Aug. 1, 1975, and Dec. 1, 1975, pursuant to
Pub. L. 93–361 and
Pub. L. 94–64; Dec. 12, 1975,
Pub. L. 94–149, § 5,
89 Stat. 806; Apr. 26, 1976, eff. in part Aug. 1, 1976, and Oct. 1, 1977, pursuant to
Pub. L. 94–349 and
Pub. L. 95–78; Apr. 30, 1979, eff. in part Aug. 1, 1979, and Dec. 1, 1980, pursuant to
Pub. L. 96–42; Apr. 28, 1982, eff. Aug. 1, 1982; Oct. 12, 1982,
Pub. L. 97–291, § 3,
96 Stat. 1249; Apr. 28, 1983, eff. Aug. 1, 1983; Oct. 12, 1984,
Pub. L. 98–473, title II, §§ 209,
215,
404,
98 Stat. 1986, 2014, 2067; Oct. 30, 1984,
Pub. L. 98–596, § 11(a), (b),
98 Stat. 3138; Apr. 29, 1985, eff. Aug. 1, 1985; Oct. 27, 1986,
Pub. L. 99–570, title I, § 1009(a),
100 Stat. 3207–8; Nov. 10, 1986,
Pub. L. 99–646, §§ 12(b),
24,
25
(a),
54
(a),
100 Stat. 3594, 3597, 3607; Mar. 9, 1987, eff. Aug. 1, 1987; Apr. 25, 1988, eff. Aug. 1, 1988; Nov. 18, 1988,
Pub. L. 100–690, title VI, § 6483, title VII, §§ 7076,
7089
(c),
102 Stat. 4382, 4406, 4409; Apr. 25, 1989, eff. Dec. 1, 1989; May 1, 1990, eff. Dec. 1, 1990; Apr. 30, 1991, eff. Dec. 1, 1991; Apr. 22, 1993, eff. Dec. 1, 1993; Apr. 29, 1994, eff. Dec. 1, 1994; Sept. 13, 1994,
Pub. L. 103–322, title XXIII, § 230101(b), title XXXIII, § 330003(h),
108 Stat. 2078, 2141; Apr. 27, 1995, eff. Dec. 1, 1995; Apr. 23, 1996, eff. Dec. 1, 1996; Apr. 24, 1996,
Pub. L. 104–132, title II, § 207(a),
110 Stat. 1236; Apr. 11, 1997, eff. Dec. 1, 1997; Apr. 24, 1998, eff. Dec. 1, 1998; Apr. 26, 1999, eff. Dec. 1, 1999; Apr. 17, 2000, eff. Dec. 1, 2000; Oct. 26, 2001,
Pub. L. 107–56, title II, §§ 203(a),
219,
115 Stat. 278, 291; Apr. 29, 2002, eff. Dec. 1, 2002; Nov. 2, 2002,
Pub. L. 107–273, div. C, title I, § 11019(b),
116 Stat. 1825; Nov. 25, 2002,
Pub. L. 107–296, title VIII, § 895,
116 Stat. 2256; Apr. 30, 2003,
Pub. L. 108–21, title VI, § 610(b),
117 Stat. 692; Apr. 26, 2004, eff. Dec. 1, 2004;
Pub. L. 108–458, title VI, § 6501(a), Dec. 17, 2004,
118 Stat. 3760; Apr. 25, 2005, eff. Dec. 1, 2005; Apr. 12, 2006, eff. Dec. 1, 2006; Apr. 30, 2007, eff. Dec. 1, 2007.