President Obama after signing the Don't Ask, Don't Tell Repeal Act of 2010 into law on Dec. 22, 2010. Jewel Samad/AFP/Getty Images hide caption

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President Obama will be joined by House Speaker John Boehner for 18 holes on Saturday, in a much anticipated "golf summit." Cory Lum/Getty Images hide caption

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Seven Republican presidential hopefuls stand onstage before their first debate Monday, at St. Anselm College in Manchester, N.H. From left are former Pennsylvania Sen. Rick Santorum, Minnesota Rep. Michele Bachmann, ex-House Speaker Newt Gingrich, former Massachusetts Gov. Mitt Romney, Texas Rep. Ron Paul, ex-Minnesota Gov. Tim Pawlenty and businessman Herman Cain. Jim Cole/AP hide caption

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Wind turbines along the Columbia River Gorge near Goldendale, Wash. The Obama administration is hoping that a bet on green technologies will create the jobs of the future. Rick Bowmer/AP hide caption

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President Obama, with Facebook CEO Mark Zuckerberg, speaks during a town hall meeting April 20 at Facebook headquarters in Palo Alto, Calif. Mandel Ngan/AFP/Getty Images hide caption

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President Dwight Eisenhower touches the head of Dzimbo, a 440-pound elephant, on Oct. 12, 1959. The French Community of African Republics sent Dzimbo to Washington as a gift for the president. Byron Rollins/AP hide caption

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President Obama talks on the phone with Missouri Gov. Jay Nixon, during his visit to Dublin on Monday. Pete Souza/Official White House Photo hide caption

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President Obama arrives to speak at the American Israel Public Affairs Committee convention in Washington, D.C., on Sunday. Obama tried to defuse the controversy that erupted last week when he argued that Palestinian-Israeli peace talks should begin with Israel's 1967 borders, with mutually agreed upon land swaps. J. Scott Applewhite/AP hide caption

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