Mark Warner (from left) of Virginia, the top Democrat on the Senate Intelligence Committee, and Republican Chairman Richard Burr of North Carolina listen to testimony during a March 30 hearing in Washington, D.C.
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President Barack Obama announces a staff shakeup Wednesday, naming U.N. Ambassador Susan Rice (right) to replace the retiring Tom Donilon. He also nominated former White House aide Samantha Power (left) to succeed Rice at the U.N.
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Some Republicans are betting that President Obama won't push for a Susan Rice nomination if it could jeopardize negotiations with the GOP on things like the budget, or immigration.
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