what he says is the consequences the stakes are, and the fact he's already made it clear he doesn't feel he needs congressional authority to act? >> david, i'm not going to start -- i'm not going to be the first person who answers the if questions on your show. i'm not going to get into hypothetical. it's a very high-stakes question for congress this week. with the intelligence showing what it shows, what are the consequences for the assad regime? they have an opportunity to answer that question. >> i think a lot of the criticism of the president has been trying to understand why there's been some zigzag to the approach, some changes in the approach, and indeed, what the ultimate leadership position is of the president. he said something that raised some eyebrows on wednesday with regard to the red line. here's what he said. >> my credibility is not on the line. the international community's credibility is on the line. and america and congress's credibility is on the line. >> why is the president's credibility not on the line?