34 U.S.C. § 12521
Increased penalties for drug-dealing in “drug-free” zones
Pursuant to its authority under section 994 of title 28 , the United States Sentencing Commission shall amend its sentencing guidelines to provide an appropriate enhancement for a defendant convicted of violating section 860 of title 21 .
( Pub. L. 103–322, title IX, § 90102 , Sept. 13, 1994 , 108 Stat. 1987 .)