disapprove any agreement if they were going to stop it. so you could have a substantial number of democrats to line up in congress and say congress should have this power, then when faced with the actual terms of the agreement, they might not choose to exercise that option. corker says he believes this strengthens the president's hand. it allows the president to say, gee, i can't offer that up because my congress will not agree to it. i don't know if that's correct analysis of it but it does demonstrate the fact that mere passage of the corker deal does not mean the death of an iran deal. >> looking at chuck schumer's role in particular, since he is the leader in waiting now of the democrats in the senate very powerful position. he's in a very influential position with his caucus now. at that second stage, is it conceivable he might be one who votes for the corker bill but then votes in the end to support the president? >> i think that's a distinct