Guests: Sen. Joe Lieberman, I-Conn., former Secret Service Director Ralph Basham, Sen. Tom Coburn R-Okla., Rep. Elijah Cummings, D-Md., and Rep. Sheila Jackson Lee, D-Texas on the April 22nd edition of "Face the Nation." Stephanie Cutter and Eric Fehrnstrom also appeared. Panelists included Tavis Smiley, Cornel West, Major Garrett, Melinda Henneberger, Norah O'Donnell and John Dickerson.