Dustbun is rather a good word though. I'm sure a useful meaning for it could be devised.

It may be that you are right Ron, and the USA is so different from all the other countries where digraced and vilified leaders have subsequently bobbed to the surface as national heroes (at least in the eyes of a significant section) that it couldn't happen there. (Though Nixon isn't the best example to prove that - I seem to have seen quite a few cases of him being compared very favourably to Bush in recent times.)

But it ain't going to happen anyway.