The Democrats self destructed in November '06 didn't they?
You're missing the forest for the trees. Rove is nothing more than a political operative. If they go after Rove, they are mounting nothing more than a political persecution.
They might as well ask him "Are you or have you ever been a Republican."
It ain't gonna sell on Main Street. They are going to look like fools going after the little fish.
Not only will they appear to be invading the province of the Presidency, but also the courts. If laws have been violated, then that's the courts' job, not theirs.
And people aren't going to forget that the Dems promised 6 years ago that they'd never let Bush govern. They are just ratifying the public perception that they are rabid partisans who use the trappings of power for political purposes. That's definitely not what America is about. The more nasty it gets, the better.
People don't trust them as it is. They aren't going to help their cause.