CHRIS MATTHEWS, MSNBC ANCHOR: Welcome back to Hardball. In the CIA leak case against Vice President Cheney's chief of staff Scooter Libby, there are new documents tonight that are raising questions about the possible role of Cheney himself in the actions that led to the outing of a CIA operative. Libby has filed legal pleadings in court saying that he never saw a key document with the Vice President's handwriting on it. If Libby didn't see that document, who did?
Hardball correspondent David Shuster reports.
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DAVID SHUSTER, MSNBC CORRESPONDENT (voice over): Former federal prosecutors say it's a position that increases the odds Vice President Cheney will be called as a prosecution witness in the perjury case against his former chief of staff Scooter Libby.