Kevin Drum, in an apt blurb on the timing of W's CIA shakeup (short version: Fail all you want, but don't say anything bad about W), said "The CIA's assessment of Iraq's WMD program turned out to be completely wrong. George Tenet reportedly called it a "slam dunk." No one was fired for this."
The "slam dunk" report comes from Bob Woodward's "Plan of Attack". According to the story, W looked at the intelligence and said, "This is the best we've got." Tenet responded, "Don't worry; it's a slam dunk case."
Bush wasn't asking if the intelligence was good. He wanted to know if he could sell it to the American people, to Congress, and the world. As Woodward said, "And, and the president kind of, as he's inclined to do, says 'Nice try, but that isn't gonna sell Joe Public. That isn't gonna convince Joe Public.'"
W wanted to market the intelligence. The accuracy or comprehensiveness of it was not the issue. Tenet said, you can sell it, it's a slam dunk. W could have his war and kill all the Iraqis he wanted because Tenet gave him enough for a strong sales presentation.
Why is this important? Because W often gets a pass on this issue, as people say that Clinton's CIA chief gave him bad intelligence. W's faith-based presidency didn't need good intelligence. It just needed a way to get enough people behind him. That's what Tenet provided, as requested. Don't blame him for W's priorities.