Whereas the media has begun to echo the White House version of Rumsfeld's departure (i.e. "The Decider decided"), no doubt the new Dem leadership had a lot to do with it. In fact, it's not difficult to imagine Pelosi, Reid, and others in a conference call with Bush, Cheney, and Rove, in which the new leaders armed with subpoena power say something like, "Guys, do you want to cooperate with us to try to put this country back on the right track, or do you want to spend the rest of your terms explaining how you lied us into a war and sold out the American people to unsavory Abramoff types?"
Undoubtedly, there is horse-trading going on and some plea-bargaining. For a change, the deals being struck are on behalf of the American people, rather than at their expense.