But nobody could be worsethen BUsh

Clinton was no better than Bush, so by your idea Nobody could be worst than Clinton.

Saddam was wrong and he deserved death sentence. But international laws were broken by Clinton and Bush both. And neither Clinton nor Bush were any better than Saddam himself.

The worst president was Abraham Lincoln on all accords, bush could have never matched the wrong Lincoln did. He caused 622,000 american deaths.
With Hillary being secretary and potentially strong to avert Obama decisions as she wants, I don't see good future for Obama.
And well, its just the start of Obama (which will start from 21st jan), after four years, we will see where he sits in the biggest destroyers list of America. On his part to play, he is 44rth, lets see what rank he gains after his performance.