In this photo provided by CBS, Senate Intelligence Committee Chair Jay Rockefeller, D-W.Va., appears on CBS's "Face the Nation" in Washington, Sunday, Dec.. 9, 2007. (AP Photo/CBS Face the Nation, Karin Cooper)
In this photo provided by CBS, Senate Intelligence Committee Chair Jay Rockefeller, D-W.Va., appears on CBS's "Face the Nation" in Washington, Sunday, Dec.. 9, 2007. (AP Photo/CBS Face the Nation, Karin Cooper)
In this photo provided by CBS, Senate Intelligence Committee Chair Jay Rockefeller, D-W.Va., listens to a question regarding the destroyed CIA videotapes after appearing on CBS's "Face the Nation" in Washington, Sunday, Dec.. 9, 2007. (AP Photo/CBS Face the Nation, Karin Cooper)
In this photo provided by CBS, Senate Intelligence Committee Chair Jay Rockefeller, D-W.Va., listens to a question regarding the destroyed CIA videotapes after appearing on CBS's "Face the Nation" in Washington, Sunday, Dec.. 9, 2007. (AP Photo/CBS Face the Nation, Karin Cooper)
In this photo provided by CBS, Senate Intelligence Committee Chair Jay Rockefeller, D-W.Va., appears on CBS's "Face the Nation" in Washington, Sunday, Dec.. 9, 2007. (AP Photo/CBS Face the Nation, Karin Cooper)
In this photo provided by CBS, Senate Intelligence Committee Chair Jay Rockefeller, D-W.Va., appears on CBS's "Face the Nation" in Washington, Sunday, Dec.. 9, 2007. (AP Photo/CBS Face the Nation, Karin Cooper)
In this photo provided by CBS, Senate Intelligence Committee Chair Jay Rockefeller, D-W.Va., appears on CBS's "Face the Nation" in Washington, Sunday, Dec.. 9, 2007. (AP Photo/CBS Face the Nation, Karin Cooper)
In this photo provided by CBS, Senate Intelligence Committee Chair Jay Rockefeller, D-W.Va., appears on CBS's "Face the Nation" in Washington, Sunday, Dec.. 9, 2007. (AP Photo/CBS Face the Nation, Karin Cooper)
In this photo provided by CBS, Senate Intelligence Committee Chair Jay Rockefeller, D-W.Va., appears on CBS's "Face the Nation" in Washington, Sunday, Dec.. 9, 2007. (AP Photo/CBS Face the Nation, Karin Cooper)
In this photo provided by CBS, Senate Intelligence Committee Chair Jay Rockefeller, D-W.Va., appears on CBS's "Face the Nation" in Washington, Sunday, Dec.. 9, 2007. (AP Photo/CBS Face the Nation, Karin Cooper)