7 U.S.C. § 2209e

On and after October 21, 1993, none of the funds available to the Department of Agriculture may be used to make production or other payments to a person, persons, or corporations upon a final finding by court of competent jurisdiction that such party is guilty of growing, cultivating, harvesting, processing or storing marijuana, or other such prohibited drug-producing plants on any part of lands owned or controlled by such persons or corporations.