1972—Subsecs. (d) to (f). Pub. L. 92–502 added subsecs. (d) to (f).

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

Pub. L. 92–159, § 3, Nov. 18, 1971, 85 Stat. 481, provided that: “The amendments made by the first section of this Act [enacting this section] shall take effect as of the thirtieth day after the date of enactment of such section [Nov. 18, 1971]; except that, in any case in which a State is not authorized to issue any permit referred to in the amendments made by such first section, such amendments shall take effect in any such State as of the thirtieth day after the expiration of the next regular session of the legislature of such State which begins on or after the date of enactment of this Act.”