—As someone who does not like or respect Bush, I still think this is a non-story. I think a proposal was made, but that nothing in it would have prevented the WTC/Pentagon attacks.—
On the contrary, I very much think it would have, because it called for correcting the very problems that seem to have plauged our intelligence agencies and international police efforts, and many people in the know agree should have been correctde (and are now scambling to correct).
Again: the plan was something that people on both sides of the aisle agreed with. It contained what is pretty much the rough draft of exactly what the Bush administration has put forward as their major domestic policy response: a cabinet-level position on Homeland defense.
But neither Clinton nor Bush nor either Congress actually acted on it, in my estimation, probably because it would have been much too big a change, and with no immediate threat, it was politically hard to move (besides, there were other priorities, like Gore winning the election, and the tax cuts and drug war after the election).