If the fédéral government could pass the Defense of Marriage Act in the 90s, then it's well within their jurisdiction to legalise gay marriage nationwide.

!!

That was nice of him.

That means it would have to go through Congress. And therefore out of his hands.

All I said was that the federal government has the power to legislate on this issue as Sats implied this was a power reserved solely for American states.

As for your remark, you've just underlined one of the glaring flaws of the American system of government.

Gay marriage should be allowed in the US nationwide, sadly there are still many states that haven't allowed, but the letter is nice, a bit cold and impersonal