Radio 4 says: "Bush to lead inquiry into Katrina: US President George W Bush says he will lead an inquiry into how the Hurricane Katrina disaster was handled."
I can see it now: "So George, did you totally f*ck it up?". "No George I didn't". "Well George, that seems fair enough: after all, you're a complete bozo, who would expect you to do anything useful?".
At least in the UK we put a thin veneer of honesty over the process by getting a nominally independent judge who can be relied on the discover the right things, rather than let people investigate themselves. Banana republic, anyone?
[Update: Miriam points out this: "So I'm asking Congress, please investigate this now. Take whatever idiot they have at the top of whatever agency and give me a better idiot. Give me a caring idiot. Give me a sensitive idiot. Just don't give me the same idiot."