She wasn't. And since Fitz couldn't find an underlying crime, he nails Libby because he couldn't get his stories straight.
A waste of $2 million.
"No one cares whether or not she was covert."
It seems to me that Fitzgerald is drawing a distinction between "covert" and "classified". He's saying that Plame's status was classified. If Plame was covert within the meaning of the statute, a whole bunch of people would have been indicted a long time ago.