Well... I'm not familiar with how good a leader Bush is, not living in America. But even vaguely theocratic leadership isn't a good idea, especially in a nation that has a good deal of religious diversity. (Which I'm guessing the US probably would have...?) A leader should make decisions for the people based on common sense, rather than any religious ideals they hold personally.
Exactly. While at the time there is a definite majority of Christians, usually protestant, the whole nation is not, by any means, entirely Christian. We don't all adhere to one narrow definition of faith, and justification of core decisions with faith should not have a place in political decisions concerning the country.