On Jan. 28, 1986, President Ronald Reagan spoke to the American people about the Challenger disaster from the Oval Office. hide caption

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Former Alaska Gov. Sarah Palin waves to supporters after endorsing South Carolina gubernatorial candidate Nikki Haley at a rally in Columbia, S.C., in May. Mary Ann Chastain/AP hide caption

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President Obama tours the V&M Star steel plant in Youngstown, Ohio, last month. The visit was part of a broader pitch by the president to show how the stimulus package is helping in places like Ohio. Jim Watson/AFP/Getty Images hide caption

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Mary Kay Henry is the new president of the 2.2 million-member Service Employees International Union. She was elected over the weekend and replaces Andy Stern, who retired last month. SEIU hide caption

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