“Crucial to understanding federalism in modern-day America is the concept of mobility, or "the ability to vote with your feet." If you don't support the death penalty and citizens packing a pistol, don't come to Texas. If you don't like medicinal marijuana and gay marriage, don't move to California....

The Court subsequently ruled that Congress, using its Commerce Clause power, could prevent California from legalizing medicinal marijuana. In other words, the federal government has the full prerogative to intervene in your private home if you are engaged in any activity that has some minimal relationship to the exchange of goods....

When the federal government oversteps its authority, states should tell Washington they will not be complicit in enforcing laws with which they do not agree. Again, the best example is an issue I don't even agree with—the partial legalization of marijuana. Californians clearly want some level of legalized marijuana, be it for medicinal use or otherwise. The federal government is telling them they cannot. But states are not bound to enforce federal law, and the federal government cannot commandeer state resources and require them to enforce it.”