Hardin alleged that McNamee has kept changing his story even from his first meeting with federal prosecutors and later with claims about physical evidence he had.
"If Mr. McNamee's mouth is moving, he's making an inconsistent statement." Hardin said.
Efforts to reach McNamee's attorney for comment were unsuccessful.
Walton ruled from the bench that he would review the documents that DLA Piper has in its possession and will decide if they should be turned over to Clemens defense team.
Walton denied a defense request to seek additional documents from the House Oversight and Government Reform Committee.
Counsel for the House of Representatives argued that the documents are protected under the speech and debate clause of the Constitution, which isolates the executive branch from interfering with Congress.
Walton added that the information Clemens' lawyers were seeking was obtainable in other ways.