http://truthout.org/docs_04/010704B.shtml
Senator Urges White House on Leak Probe
" Editors Note | As the probe into who leaked the name of CIA undercover agent Valerie Plame gathers steam the FBI will ask all White House staff members to sign waiver forms granting their permission to those reporters involved to name the source of the information. George W. Bush's press secretary Scott McClellan is saying all the right things publicly but refuses to commit to the waiver forms. Privately some of the reporters have told British reporter Julian Borger of the Guardian that the source was in fact top Bush confidant Karl Rove."