Based on title 18, U.S.C., 1940 ed., § 591 (R.S. § 1014; May 28, 1896, ch. 252, § 19, 29 Stat. 184; Mar. 2, 1901, ch. 814, 31 Stat. 956).

This section was completely rewritten to omit all provisions superseded by Federal Rules of Criminal Procedure, rules 3, 4, 5, 40 and 54(a) which prescribed the procedure for preliminary proceedings and examinations before United States judges and commissioners and for removal proceedings but not for preliminary examinations before State magistrates.

1984—Pub. L. 98–473 substituted “determining, pursuant to the provisions of section 3142 of this title, whether to detain or conditionally release the prisoner prior to trial” for “determining to hold the prisoner for trial”.

1968—Pub. L. 90–578 substituted “United States magistrate” and “magistrate” for “United States commissioner” and “commissioner”, respectively.

1966—Pub. L. 89–465 substituted “or released as provided in chapter 207 of this title” for “or bailed”.

“United States magistrate judge” substituted for “United States magistrate” in text pursuant to section 321 of Pub. L. 101–650, set out as a note under section 631 of Title 28, Judiciary and Judicial Procedure.

Amendment by Pub. L. 90–578 effective Oct. 17, 1968, except when a later effective date is applicable, which is the earlier of date when implementation of amendment by appointment of magistrates [now United States magistrate judges] and assumption of office takes place or third anniversary of enactment of Pub. L. 90–578 on Oct. 17, 1968, see section 403 of Pub. L. 90–578, set out as a note under section 631 of Title 28, Judiciary and Judicial Procedure.

Amendment by Pub. L. 89–465 effective ninety days after June 22, 1966, see section 6 of Pub. L. 89–465, set out as an Effective Date note under section 3146 of this title.