The President lied about Rove being a leaker? Well, the rest of the right thinks that it's an endearing quality.
Rove presumably told the President that he was one of the sources of the Plame information long ago. It is interesting that Bush didn't take the path of least resistance and ease Rove out of the administration at the end of his first term. The President's reputation for loyalty to has aides is certainly well-deserved.
Let's put the law aside for a brief moment. At the very least, the protection of Karl Rove could be considered unethical. Going with that conclusion, Rove should be fired and impeachment proceedings should begin. Finally, the administration's M.O. is making headlines (politics above all else) and the media has stopped giving Bush a break. The current administration has used the mainstream media to it's advantage since 9/11. For all intents and purposes, I think the honeymoon period is finally over.
If you don't believe me, go to Crooks and Liars and watch David Gregory at yesterday's press briefing.