21 U.S. Code § 957 - Persons required to register
Section 802(25) of this title, referred to in subsec. (b)(1)(C), was redesignated section 802(26) of this title by Pub. L. 98–473, title II, § 507(a), Oct. 12, 1984, 98 Stat. 2071, and was further redesignated section 802(27) of this title by Pub. L. 99–570, title I, § 1003(b)(2), Oct. 27, 1986, 100 Stat. 3207–6.
1993—Subsec. (a)(1). Pub. L. 103–200, § 3(e)(1)(A), inserted “or list I chemical” after “controlled substance”.
Subsec. (a)(2). Pub. L. 103–200, § 3(e)(1)(B), substituted “or list I chemical,” for “in schedule I, II, III, IV, or V,”.
Subsec. (b)(1). Pub. L. 103–200, § 3(e)(2)(A), inserted “or list I chemical” after “controlled substance” in introductory provisions and subpar. (B).
Subsec. (b)(2). Pub. L. 103–200, § 3(e)(2)(B), inserted “or list I chemicals” after “controlled substances”.
1984—Subsec. (a)(2). Pub. L. 98–473 inserted reference to schedule V.
Amendment by Pub. L. 103–200 effective on date that is 120 days after Dec. 17, 1993, see section 11 of Pub. L. 103–200, set out as a note under section 802 of this title.
Section effective on first day of seventh calendar month that begins after Oct. 26, 1970, see 1105(a) of Pub. L. 91–513, set out as a under section 951 of this title.
Pub. L. 91–513, title III, § 1104, Oct. 27, 1970, 84 Stat. 1294, as amended by Pub. L. 99–514, § 2, Oct. 22, 1986, 100 Stat. 2095, provided that: