1. Plame doesn't fall under the class of people covered by the law.
2. She was already "outed" long before the events in question.
If this is fact then where is there a national security breach? What was the CIA's official response to Plame's "outing" prior to the events in question? Was there any? If they issued a statement that she was or is a classified employee then a crime was committed but not by Libby, IMO.