Why is this not surprising?
Tape: Bush, Chertoff Warned Before Katrina (AP)
Video (iFilm)
In dramatic and sometimes agonizing terms, federal disaster officials warned President Bush and his homeland security chief before Hurricane Katrina struck that the storm could breach levees, put lives at risk in New Orleans' Superdome and overwhelm rescuers, according to confidential video footage.
Bush didn't ask a single question during the final briefing before Katrina struck on Aug. 29, but he assured soon-to-be-battered state officials: "We are fully prepared."
The footage — along with seven days of transcripts of briefings obtained by The Associated Press — show in excruciating detail that while federal officials anticipated the tragedy that unfolded in New Orleans and elsewhere along the Gulf Coast, they were fatally slow to realize they had not mustered enough resources to deal with the unprecedented disaster.

Not to be too much of a nag... this comment isn't intended as a defense of Bush's statements about not being warned... But, having watched this, the video does not show the prez being warned about a levee breach. He is specifically being told about the levees being topped by the storn surge... meaning, I gather, the levees aren't tall enough. The isn't a nitpicky semantic discrepancy, it would seem to me that topping/overflowing a dam or levee is quite a different thing that breaking/breaching through the structure. Just a thought.
Gomez 02 Mar 2006