Two Assumptions: He did it, and he'll get away with it.
From the New York Times:
WASHINGTON, July 11 - Nearly two years after stating that any administration official found to have been involved in leaking the name of an undercover C.I.A. officer would be fired, and assuring that Karl Rove and other senior aides to President Bush had nothing to do with the disclosure, the White House on Monday refused to answer any questions about new evidence of Mr. Rove's role in the matter.