Another thing that should be noted in this clip is how everyone in the audience laughed and clapped after his answer. Obama is a showman. If if went the other direction and said what he might really think, he would have lost face in that situation. The fact that he said one thing today and may do another next term is not exactly unthinkable to anyone who knows how politics works. And really, that he even mentioned it and said how high the question ranked is a very good sign that the movement is succeeding.