You got it entirely backwards. Fedgov has told states that MJ must be illegal, and that gay marriage must be legal. Both actions violate the Tenth Amendment.
States already told fedgov to get stuffed with respect to MJ, and there is beginning to be some pushback on the gay marriage front, as there should be.
So are you ready to discuss the Tenth Amendment aspects of MJ, or do you have that Amendment on permanent avoidance?
Well Ken.....I will tell you that one is a tenth amendment case and the other is not.
Guess which one.