That implies that he's done nothing wrong at all. Surely you can name at least one bad thing he's done and knock that down to an A+.
I'd be hard-pressed to think of one thing he has done wrong.
Federal Marriage Amendment? PATRIOT Act?
Keep in mind that President Bush held off on supporting the FMA for a very long time. I remember reading articles by people like Bob Novak who were criticizing the President for not jumping on board the bandwagon. From a political standpoint, he had no choice. If he opposed the FMA, its not like people like you would jump to his defense and make up for the lost support.
I used to be a staunch, staunch opponent of the PATRIOT Act but have been warming to it. A friend of mine who knows a lot more about the legislation than I do has been working on me and slowly pulling me towards his cause. Its not as bad as advertised - but I am glad there is pressure on the Congress to keep it limited.