Secretary of Defense Robert Gates (left) and Chairman of the Joint Chiefs of Staff Admiral Mike Mullen testify before the House Armed Services Committee on Thursday about Operation Odyssey Dawn. Saul Loeb/AFP/Getty Images hide caption

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President Obama has "often confounded his opponents by defying political stereotypes," says Julian Zelizer, a presidential historian at Princeton University. Saul Loeb/AFP/Getty Images hide caption

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President Obama is focusing his review on government agencies that deal with trade and exports. Paul J. Richards/AFP/Getty Images hide caption

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