chemical weapons of the assad regime or as senator mccain wants, the assad regime itself, the congress can't pull the president back. congress can't tell the president how to wage war. >> neil: in this case, a 90 day kind of time limit on it. he goes back and said i need more time, by and large they can't take it back. >> in the congress gives him authorization to send missiles, he can put troops on the ground and congress can't brink them back. if he stays beyond 90 days it requires a two-thirds vote of both houses of congress to get the troops off the ground. >> neil: undoing this is a lot easier said than done. >> correct. >> neil: and you know history suggests under republican and democratic presidents, things go awry. >> look two, different people reading the resolution had two different conclusions. john kerry says no boots on the ground, john mccain says