Senate Foreign Relations Committee Chairman Sen. Bob Corker, R-Tenn., center, and the committee's ranking member Sen. Ben Cardin, D-Md., right, were all smiles April 14 after the committee passed an agreement on oversight of Iran negotiations. But the bill has run into some outspoken opponents in the full Senate. Andrew Harnik/AP hide caption

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Senate Minority Leader Harry Reid, D-Nev., (left) and Majority Leader Mitch McConnell, R-Ky., at a ceremony last month at the U.S. Capitol. Chip Somodevilla/Getty Images hide caption

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President Obama and House Speaker John Boehner at the White House on Nov. 16. Administration officials say the two men met Sunday to discuss the "fiscal cliff." Carolyn Kaster/AP hide caption

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Come on back, he says. Mandel Ngan /AFP/Getty Images hide caption

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