A prior section
849,
Pub. L. 91–513, title II, § 409, Oct. 27, 1970,
84 Stat. 1266;
Pub. L. 99–514, § 2, Oct. 22, 1986,
100 Stat. 2095, related to dangerous special drug offender sentencing, prior to repeal by
Pub. L. 98–473, title II, §§ 219(a),
235
(a)(1), Oct. 12, 1984,
98 Stat. 2027, 2031, eff. Nov. 1, 1987, and applicable only to offenses committed after the taking effect of such repeal.