President Bush's former spokesman, Scott McClellan, will testify before a House committee next week about whether Vice President Dick Cheney ordered him to make misleading public statements about the leaking of CIA agent Valerie Plame's identity.

McClellan's lawyers said he has accepted House Judiciary Committee Chairman John Conyers' invitation to testify June 20. The attorneys said McClellan will appear and be sworn during the proceedings.

McClellan said he was misled by others, possibly including Cheney, about the role of I. Lewis "Scooter" Libby in the leak and has said publicly that Bush and Cheney "directed me to go out there and exonerate Scooter Libby."

Plame's CIA identity was leaked to the news media by several top Bush administration officials in 2003, including Libby and former top White House political adviser Karl Rove.