Plenty of people have suggested that, and also suggested an Iraqi connection. But given the way such suspicions have been generally pooh-poohed, it's interesting to see it coming from this source, and the domestic political implications are dramatic.
UPDATE: Roger Simon has further observations that are, as always, worth reading.
Is there any hope of getting past partisan antagonism and coming up with a fair evaluation of what Richard Clarke has to say about the Bush administration? No, not really. At least for now. I think a big part of the problem is that the newspapers have been portraying Clarke as an immaculate hero and the President as a black-hatted villain.
Indeed. Adesnik has quite a survey of responses to Clarke's testimony. Referring to an earlier post of his defending Clarke, Adesnik observes: " I missed the real story: that Clarke was rewriting the history of what happened before September 11th."
A lot of other people missed it -- or ignored it -- too.