Karl Rove, Felon
It's now been revealed that Karl Rove, aka Bush's Brain, was the source who blew the cover of a CIA agent, Valerie Plame. This is a federal felony punishable by prison.
The story is long and complicated, but Gene Lyons provides his always sharp perspective and a good general overview of the case here.
And the Al Franken show's site has an excellent account of just how blatantly the White House is lying about it. Spokesliar Scotty McClellan had actually stated flat out that Karl Rove was not the source, and said that suggesting so was "ridiculous."
Karl Rove may or may not get charged, (likely not), but as Lyons points out, his parsing of words and legal ju-jitsu makes Clinton's definition of "is" pale by comparison.