Bush aides believe (bad link corrected) the administration's handling of Katrina did the president in with the public. Certainly, scales fell from millions of eyes in that fiasco, though it was far from singular in the reign of error. Clumsy, incompetent, insensitive -- all these are adjectives applicable more than once.
Condi and Laura are standing by their man. To misquote Tammy: If you love him, you forgive him, because, after all, he's just a Bush.