<P> The Commerce Clause is the source of federal drug prohibition laws under the Controlled Substances Act . In a recent medical marijuana case, Gonzales v. Raich, the Supreme Court rejected the argument that the ban on growing medical marijuana for personal use exceeded Congress' powers under the Commerce Clause . Even if no goods were sold or transported across state lines, the Court found that there could be an indirect effect on interstate commerce . The Court relied heavily on a New Deal case, Wickard v. Filburn, which held that the government may regulate personal cultivation and consumption of crops because the aggregate effect of individual consumption could have an indirect effect on interstate commerce . </P> <P> Article I, Section 8, Clause 3: </P> <P> (The Congress shall have Power) To regulate Commerce with foreign Nations, and among the several States, and with the Indian Tribes; </P> <P> The significance of the Commerce Clause is described in the Supreme Court's opinion in Gonzales v. Raich, 545 U.S. 1 (2005): </P>

What judicial opinion destroyed the distinction between interstate and intrastate commerce