So what was that everyone was saying about a Federal constitutional marriage amendment not being necessary?
that would only be needed if the federal DOMA fell in the SCOTUS.
Federal law will never ban gay marriage in the states - it will ban the inter-state recognition of it, but that's all. the states that want gay marriage, or that have a political system that denies the people the right to decide it, will have gay marriage.
like NJ does now.