How so? Prop 19 isn't going to legalize marijuana federally. But the continued reactions of STATES legalizing it will. How is that a contradiction?
I guess you weren't paying attention in high school Civics.
Under the Constitution, and the reason no broad based appeal to legalize has reached the Supreme Court is that the original Marihuana Tax Act, and all other statutes regarding Cannabis are Constitutionally irrelevant.
The issue has ALWAYS been about "State's Rights".
Obama is the first president since Jimmy Carter to attempt to let a little sanity into the Fed's position.
Of course, he ran into a brick wall of opposition from the DEA and every other government and corporate entity that saw this costing them money.
Follow the money.
Oh, that's right. You get paid to do this.