Pub. L. 100-690, tit. VI, subtit. A, sec. 6058
SUBPOENA POWER.
SEC. 6058. SUBPOENA POWER. The first sentence of section 506(a) of the (Controlled Substances Act (21 U.S.C. 876(a)) is amended by inserting “listed chemicals, tableting machines, or encapsulating machines,” after “with respect to controlled substances,”.