A House committee has issued a subpoena for FBI reports from interviews with President Bush and Vice President Dick Cheney in the CIA leak investigation.

The subpoena to Attorney General Michael Mukasey from the House Oversight and Government Reform Committee is the latest move by Congress to shed light on Cheney's precise role in the leak of Valerie Plame's CIA identity.

On Friday, former White House press secretary Scott McClellan is scheduled to testify to the House Judiciary Committee.

He is expected to talk about White House higher-ups directing him to publicly deny that Cheney's chief of staff and White House political adviser Karl Rove played any role in leaking the CIA employment of Plame, who is married to Bush administration war critic Joseph Wilson.