Over at TPM, Josh notes directly from the indictment that they knew Valerie Plame was undercover.

On or about June 12, 2003, LIBBY was advised by the Vice President of the United States that Wilson’s wife worked at the Central Intelligence Agency in the Counterproliferation Divison. LIBBY understood that the Vice President had learned this information from the CIA.

That’s important if one knows what the CPD does:

This is a crucial piece of information. The Counterproliferation Division (CPD) is part of the CIA’s Directorate of Operations, i.e., not the Directorate of Intelligence, the branch of the CIA where ‘analysts’ come from, but the DO, where the spies, the ‘operatives’, come from.

Both men, know what this means, and know it means she comes from the department of the CIA that provides spies. So why no indictment? During the Press Conference I heard loud and clear that the reason they can’t indict on that crime was because of perjury and because of obstruction of justice, that is also why Fitzgerald remarked to re-empaneling the Grand Jury if necessary, and must be hoping to work a deal to get more evidence.