Sen. Cruz's "State Marriage Defense Act" is unlikely to become law anytime soon. Yet it is a good example of the kind of chaotic reaction the U.S. Supreme Court eventually could unleash if it upheld anti-gay state marriage laws in the case it will hear later this term. Justice Kennedy and Chief Justice Roberts, are you listening?
Intellectually, there's a case to be made for the rights of state government in the face of federal power. States pre-existed the federal government. States organized and fought a revolution to break free of a strong central government. Washington is, after all, the creation of a contract among sovereign states.