Given the modern standards that Bush is now being held to, few Presidents would have escaped impeachment, frankly.
*One name that leaps immediately to mind is Lincoln. Compared to Bush, Lincoln was incompetent as a commander-in-chief and his election was basically a death sentence for hundreds of thousands of Americans. It took the nation decades to recover, and Black Americans suffered for another hundred years. If anything he took a broken toaster apart, at horrible costs, and then left it to be put back together by other people.
*Another notable is Truman. He rode in on the coattails of Roosevelt, with zero foreign policy experience. He committed what are widely regarded to be the most heinous acts of inhumanity in the history of modern warfare (though I disagree there). As Zionist militants were killing British citizens in Palestine, he fought against a two-state solution and was key in pushing for the sad state of affairs that exists there to this day.
...and then there was Korea, the birth of the Vietnam conflict, McCarthyism on his watch, etc., etc. He set up "loyalty board" witchhunts looking for communists. He was a horror-show compared to Bush, and is often in historians' top ten list of presidents.
Direct quote:
""If we see that Germany is winning we ought to help Russia and if Russia is winning we ought to help Germany, and that way let them kill as many as possible, although I don't want to see Hitler victorious under any circumstances. Neither of them thinks anything of their pledged word.""
Imagine Bush saying that out loud anywhere near a microphone, much less in a speech.
**God, I could go on forever. Basically you can walk through a timeline of US wars and look at how they were fought, if nothing else but Iraq is the question. Compared to about any other war Iraq is a walk in the park. And in terms of how we got into it, I'd reply "Remember the Maine!!" A boiler blows up on a boat and we invade another country...