From NORML’s (National Org for the Reform of Marijuana Laws) home page:
The oft-lamented by conservatives Commerce Clause? This is where the liberals in Franklin Roosevelt’s administration justified the federal government’s prohibition of cannabis in 1937. Both liberal and conservative governments have argued strenuously, and successfully, in federal courts that Cannabis Prohibition is lawful and sanctioned under the US Constitution’s Commerce Clause.
Sounds like these guys need to be invited to the next RTC rally.