Steven Greenhut on America's Bipartisan Reefer Madness

How many times, writes Steven Greenhut, have we heard Republicans say that Barack Obama is obliterating states' rights, shredding the Constitution, abusing his authority to punish political enemies, backing away from campaign promises, and misallocating federal resources? So why is it that GOP activists and candidates don't ever say a word of protest about the Obama administration's pointless crackdown on medical marijuana?