Former White House Press Secretary Scott McClellan testifies on Capitol Hill in Washington

Former White House Press Secretary Scott McClellan (L) arrives with Chairman Rep. John Conyers, Jr. (D-MI) (R) before a House Judiciary Committee hearing on revelations brought forth in his book 'What Happened: Inside the Bush White House and Washington's Culture of Deception' and specifically focusing on reported attempts to cover up the involvement of White House officials in the leak of the covert identity of CIA officer Valerie Plame Wilson on Capitol Hill in Washington on June 20, 2008. (UPI Photo/Patrick D. McDermott)