Guest lineups for the Sunday TV news shows:
ABC's "This Week" _ Republican presidential candidate Rick Santorum.
NBC's "Meet the Press" _ Sen. John McCain, R-Ariz.; actor George Clooney and John Prendergast, co-founder of the Enough Project, an advocacy group that does work in Sudan.
CBS' "Face the Nation" _ Republican National Committee chairman Reince Priebus; David Axelrod, adviser to President Barack Obama's re-election campaign.
CNN's "State of the Union" _ Santorum; Rep. Paul Ryan, R-Wis.; Afghanistan's ambassador to the U.S., Eklil Hakimi.
"Fox News Sunday" _ Republican presidential candidate Mitt Romney; Clooney and Prendergast.