19 U.S. Code § 3903 - Measures for the importation and exportation of rough diamonds
The President shall prohibit the importation into, or exportation from, the United States of any rough diamond, from whatever source, that has not been controlled through the Kimberley Process Certification Scheme.
For assignment of functions of President under subsec. (b) of this section, see section 2 of Ex. Ord. No. 13312, July 29, 2003, 68 F.R. 45151, set out as a note under section 3901 of this title.