http://archive.democrats.com/preview.cfm?term=Valerie%20PlameBush Knew About Leak of CIA Operative Valerie Plame's Identity
03-Jun-04
Valerie Plame
Capitol Hill Blue: "Witnesses told a federal grand jury President George W. Bush knew about, and took no action to stop, the release of a covert CIA operative's name to a journalist in an attempt to discredit her husband, a critic of administration policy in Iraq. Their damning testimony has prompted Bush to contact an outside lawyer for legal advice because evidence increasingly points to his involvement in the leak of covert CIA operative Valerie Plame's name to syndicated columnist Robert Novak."
So here it is - direct testimony of at least two people (notice the term witnesses) that Bush knew and did nothing. At a minimum we are talking about obstruction of justice, a charge which would most assuredly be impeachable. I just think Fitz has alot more and is probably going after Cheney as the direct source of the leak.