Guest lineups for the Sunday TV news shows:
ABC's "This Week" _ 2012 GOP presidential candidate Rick Santorum.
NBC's "Meet the Press" _ Gov. Chris Christie, R-N.J.
CBS' "Face the Nation" _ Former Gov. Haley Barbour, R-Miss., and Sen. Lindsey Graham, R-S.C.
CNN's "State of the Union" _ Santorum; Sen. Jim DeMint, R-S.C., and Rep. James Clyburn, D-S.C.
"Fox News Sunday" _ House Speaker John Boehner, R-Ohio; Stuart Stevens, campaign strategist for 2012 GOP presidential candidate Mitt Romney.