It isn't happening. If it did it would be on the basis of such flimsy, trumped-up charges that absolutely nobody, including the ones making them, would be safe. It would be a throwback to Stalin's show trials. And it would cost the Dems both houses of Congress and the Presidency for decades to come.
There is another route, however, far safer for the moonbats pushing for trials, and I do foresee them pushing it. That is for Obama to sign an agreement placing the United States under the jurisdiction of the International Criminal Court and allowing that body to indict various U.S. citizens, not Bush himself right away but certainly that high if it appears they'll get away with it. The rules of evidence for that court are, to say the least, not those of any court under the Constitution.
That sort of power play is an internationalist's wet dream, and some of them are willing to risk a civil war - I'm honestly not exaggerating here - in order to try it. Fortunately these seem fringe players at the moment. Were it ever otherwise things could get very nasty very fast.
It would be a throwback to Stalin alright. But that's what many of these people are, would be Stalinsts. If they get full control of both houses of Congress and the Presidency, what makes you think they'd give it up in anything resembling a "free" election.
Stalin did say:
"It does not matter who votes that counts; it is who counts the votes."