I think he's really undermined his credibility at this...

I think he's really undermined his credibility at this point, and it really saddles him with the kind of problems that Johnson and Nixon faced. These crises are such a heavy burden, and they are so self-inflicted, except for the court vacancies, that if he is not very careful and tries to put across someone who is seen as an ultraconservative, he is going to touch off a conflagration in the Senate.