Any person convicted of any offense under this subchapter is, if the offense is a second or subsequent offense, punishable by a term of imprisonment twice that otherwise authorized, by twice the fine otherwise authorized, or by both. If the conviction is for an offense punishable under section 960(b) of this title, and if it is the offender’s second or subsequent offense, the court shall impose, in addition to any term of imprisonment and fine, twice the term of supervised release otherwise authorized.
21 U.S. Code § 962 - Second or subsequent offenses
1994—Subsec. (b). Pub. L. 103–322 substituted “one or more prior convictions of such person for a felony drug offense have become final” for “one or more prior convictions of him for a felony under any provision of this subchapter or subchapter I of this chapter or other law of a State, the United States, or a foreign country relating to narcotic drugs, marihuana, or depressant or stimulant drugs, have become final”.
Pub. L. 99–570, § 1004(a), substituted “term of supervised release” for “special parole term”.
1984—Subsec. (a). Pub. L. 98–473, § 225(b), which directed amendment of this section effective Nov. 1, 1987 (see section 235(a)(1) of Pub. L. 98–473 set out as an Effective Date note under section 3551 of Title 18, Crimes and Criminal Procedure) was omitted in the general amendment of section 225 of Pub. L. 98–473 by Pub. L. 99–570, § 1005(c).
Amendment by section 1004(a) of Pub. L. 99–570 effective on date of taking effect of section 3583 of Title 18, Crimes and Criminal Procedure (Nov. 1, 1987), see section 1004(b) of Pub. L. 99–570 set out as a note under section 841 of this title.