If Obama wins a 2nd term, I can't see him waiting until he's out of office. Every politician, particularly a president, is concerned with legacy. Right or wrong*, the objective of the 1st term is to win a 2nd term, and the objective of the 2nd term is to define your legacy.
* It's wrong.
"It does me no injury for my neighbour to say there are 20 gods or no god. It neither picks my pocket, nor breaks my leg."
-- Thomas Jefferson