"Look, except for a few people, the vast majority of our caucus understands what we're dealing with here. If you write that, I'm sure there will be some that will come to you and say, 'No, no, no. I don't believe that,' " Corker said. "But of course they understand the volatility that we're dealing with, and the tremendous amount of work that it takes by people around him to keep him in the middle of the road."