Well this pretty well removes this issue from the old " let the states decide" arguement...So now where do people stand? That ought to be asked over and over and over again until all the dodgers are shown for the cowards they are.
As I said, the argument marriage is a state's rights issue was phony from the get-go. The Left doesn't recognize it and there is prior precedent (polygamy in 1890 Utah) for a federal rule on the issue of marriage. Conservatives delude themselves into thinking the liberals and their gay allies simply want a live and let live arrangement on the subject. The federalism approach would be fine if the other side respected the right of this country to say NO to gay marriage. They don't, which is precisely why a constitutional amendment to protect the institution of marriage has become necessary.