I'm not too worried about the impact of this in the long term. Sure, the Democrats will be able to yell loud and long about the alleged "failings" of the Bush Administration, employing their usual "big lie" strategy.
But once the facts start coming out (as this synopsis already reveals), their cynical partisan exploitation of this disaster will become readily apparent. Also apparent will be the way the Bush Administration is working through the crisis, overcoming the rank incompetancies being demonstrated at the state and local level in LA, without becoming bogged down in playing the blame game.
Can't trust the MSM.