CLARK: ...I think this is an administration that has really walled itself off inside the White House. I think you got a president who fighting for his personal survival. I don't know how he's surviving without a flow of accurate information, but he is. And he continues to say things and deny the obvious. I'm sure there's some heated discussions among his aides, but I think they understand that he desires to be kept insulated and from what I've talked to, members of Congress and others, who have seen him in recent weeks and recent months. He has done everything he can to wall himself off from what we believe is the truth.