First, on the question of the creation of the DHS, the administration initially tried to handle the need for coordination of security efforts by appointing Ridge to be the point man, without creating an entire new bureaucracy. That’s perfectly consistent with the administration’s professed preference for less government, not more. The administration maintained that a whole new department wasn’t necessary. In the face of calls from people from both sides of the aisle, the administration finally relented, and proposed the creation of the DHS. Creating a new cabinet-level agency was not an idea that sprang from the administration. They only proposed it when there was a clamor for them to do so.
So, a cite that says that “President Bush’s proposal to create the DHS…” doesn’t really tell us much. Sure, he proposed it, but only because his first solution to the problem was looking like a non-starter, and was provoking lots of criticism.
On the other question, the classic “What did he know and when did he know it,” I believe I see where the difficulty lies. As I read it, those public officials who claim that Bush had advance knowledge of 9/11 were saying that there was intelligence that indicated that an attack was coming (admittedly rather non-specific), but that Bush failed to act on it, either because he wasn’t paying sufficient attention, or because he didn’t give enough credence to the intelligence, or because he was suspicious of the source of the intelligence (Clinton administration holdovers who had been pushing the “watch out for Al Qaeda” line).
That’s not quite the same as charging that Bush knew that the attacks were coming, but decided that letting the attacks take place would be a good thing, because it would allow him to advance a particular agenda. That, I think you’d agree, would be an impeachable offense. A President who did that would be a candidate for the firing squad.
I believe Bush’s critics were charging him with incompetence, rather than a traitorous conspiracy. (For purposes of this discussion, of course, we have to ignore the lunatic fringe - I’m talking instead about members of Congress, the mainstream media, etc.)
By the way, here’s Cynthia McKinney’s statement on the subject. I think it’s fairly clear that she’s not making the charge that Bush knew about the attacks, but decided to let them happen. She’s saying that we had a major intelligence screw-up, and we’d better find out what happened. Which is precisely the belief that led to the creation of the 9/11 Commission.