Can you point to anything in Brown's background that qualified him for his post? Especially in the post-September 11 world?
You enjoy seeing our president's approval rating drop like a rock? FEMA is the point organization for national disasters that overwhelm local governments. GWB had no control over who was governor of LA or mayor of NO, but he personally appointed Brown to this position. Resources that could have and should have been in position before the hurricane hit weren't there, and the buck stopped at the guy in charge.
He should be replaced immediately. I'm afraid that GWB's advisers are restraining him from his natural instincts..