Except Bush never said that. In fact he said the opposite, that if we waited until the threat was imminent it would be too late. The whole point was to act before the threat became imminent.
That's my entire point. Why did the Dems feel the need to engage in such a widespread, orchestrated campaign? It doesn't take much to debunk this lie, yet the NY Times felt the lie important enough to lead with it on their front-page analysis of the Kay Report.
IMO it was an attempt to neutralize the political impact of Kay finding these WMD programs. The programs themselves are not imminent threats - so if you can convince the people that Bush claimed the threat from Saddam was imminent, the Kay Report goes from being a justification for the war to being a condemnation of Bush. That is EXACTLY why the Dems are doing this - they knew we would find the WMD programs in place, and created an elaborate new lie to create a position from which to attack Bush.