There is the question of how likely that will happen as well as the question about some of those states doing away with their bans on SSM thus increasing the required number of states left needing to pass one for an amendment to the US Constitution.<quoted text>
Only 7 more State buddy..
BTW, that was a Congressional attempt at an Amendment, add 7 States and there is no need for Congress.
I suggest you read Article V of the US Constitution.
I'm inclined to believe there won't be any such amendment added to the Constitution in the current climate. It is arguable that right now there are 7 states with the potential climate for such an event, then again there are 2 states that may reverse their position.