Marriage is a state issue, not federal.
It hasn't stopped Obama and Dick Cheney from using their federal office to lobby for it, and do everything in their power to have judges strike down federal laws to stop "gay marriage" from being imposed on states.
Marriage isn’t a state issue today, there is no way that states will be allowed to ignore families that relocate or get transferred there by the federal govt, and military, pretending that ‘gay marriage’ is a state issue is a way to “get r done” for gay marriage nationally.
Besides the feds have to decide on many millions of marriages itself, such as in widow benefits and immigration policy and in the military and federal employment.