http://abcnews.go.com/Politics/wireStory?id=1408997
W.House takes issue with Novak on CIA leak claim
Dec 15, 2005 ? WASHINGTON (Reuters) - The White House took issue on Thursday with a claim by syndicated columnist Robert Novak that President George W. Bush knows who the source is who leaked the identity of CIA operative Valerie Plame.
"I don't know what he's basing it on," said White House spokesman Scott McClellan, declining to comment further.