What happens if Bush pardons Rove, Libby, Cheney or anyone else for leaking the name of a CIA agent during wartime?

Bush is just cowboy enough to do it. The nation will be in an uproar over it, but he doesn't care. He's King George. Granted, the Republicans will probably lose both houses of Congress if Bush pulls that stunt, but he pulled Harriet out of his hat, to hell with Congress.

So what should the Democratic response be if Bush pardons any of the PlameGate traitors?