I still don't know if I would rate Trump as the worst individual American citizen ever (there's an awful lot of competition for that dubious honor), but after the events of the past week there's no longer any doubt whatsoever that he is the single worst POTUS in American history, bar none. He was already a very strong contender for that position, but this past week has cemented him at the dead last position, no question. As someone said on Meet the Press this morning, he's made Nixon (who at least resigned) look like a statesman, and that's really going some. He also managed to create a situation where the Confederate flag was taken into the very seat and heart of the federal government, which Jefferson Davis and Robert E. Lee were never able to do. Abraham Lincoln, George Washington, and Franklin D. Roosevelt nearly always finish in the Top 3 of presidents in rankings by historians, Trump is now the Anti-Lincoln, Washington, and FDR, all wrapped into one twisted, bloated, miserable orange-painted man.
