A Backdoor Entrance For Legal Marijuana

Slate has an article by Tim Wu (the guy I had hoped to work for this summer) on the possibility that the WTO could find U.S. drug policy to be an illegal barrier to free trade. He builds a fairly strong legal case for WTO intervention, but for political reasons I can't imagine it happening until Canada and other like nations go from mere nonenforcement of anti-drug laws to outright legalization.