I think we in the United States call ourselves "American" because the other parts of the Americas all have their own nationalities, like Mexico, Brazil, etc. and can use that as their descriptions, like Mexican, Brazilian, etc. We don't have that; we'd have to be called Statesmen or something (but that's discriminatory against women, so that wouldn't work).
Only two presidents have ever been impeached in our history, Andrew Johnson and Bill Clinton, and neither were removed from office (though Clinton was impeached on flaky terms). Bush's removal from office is unlikely at this point.
Some of the things Bush has done may not be possible. With one little comment, Dubya angered Kim Chong-Il of North Korea by including that country in his "Axis of Evil." It is far easier to tear down foundations built by a predecessor than to rebuild the destruction one causes.