Then what is the charge?
Fitzgerald is required to make a charge in his opening statements at the start of this trial.
The article seems to list the charges:
"That discrepancy is at the heart of Libby's perjury and obstruction trial."
Not that I agree.
Basically its lying to federal investigators (FBI agents) and to a federal grand jury. Nothing to do with whether Plame is covert so that doesnt matter.