Which event would you put at the top of Bush's blunders?

Not saying that his administration doesn't deserve credit for doing many good things, but just wanting your input on those that the press picks on.

Chose from these or pick your own:
No child left behind
terrorism awareness prior to 9/11
terrorism awareness since 9/11
Rational for entering Iraq
Completing the job in Iraq
The firing of Federal attorneys

Breaking bowel in Iraq and trying to glue it together with American blood.

I think I just threw up a little in my mouth.
Running for president....but, I guess I have to lay blame squarly on the shoulders of the American people for voting him into office
Bush's biggest blunder was when we voted for him. His second blunder was being in office when Al Quaeda pulled off the WTC attack. His third blunder was not finding Osama.
Crashing his Mountain Bike
Iraq.