Now, I don't know anything about government, but this whole states rights thing confuses me. How can states have laws that contradict each other, and even at the federal level? That seems to weaken the whole national identity and continuity. Like marijuana. How can it be legal in one state, then the Feds come in and bust legal operations? How does it make sense to make SSM legal in some states, but not recognized in others, or even nationally?
Federal law trumps state law which is why the feds can do drug busts even if the state doesn't actively arrest/prosecute for it. There is no overarching federal marriage law that defines it for the states (DOMA only applies to federal benefits and definitions) and states have been broadly left to define definitions, legal age, etc for themselves.