James Tomsheck poses in his office in Washington in June 2009. At the time, he was assistant commissioner for internal affairs with U.S. Customs and Border Protection. Alex Brandon/AP hide caption

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Kent Sorenson says he was paid for his endorsement of Ron Paul in the 2012 presidential campaign — and that the exchange was hidden from the public. Charles Dharapak/AP hide caption

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Congressional Budget Office Director Douglas Elmendorf is reflected on a tabletop as he speaks about the office's annual Budget and Economic Outlook during an October 2013 news conference in Washington. A CBO study released Thursday projects a slight increase in the 2014 budget deficit. Jacquelyn Martin/AP hide caption

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During a speech at the American Legion's National Convention on Tuesday, President Obama again called the extremist group the Islamic State a "cancer." Charles Dharapak/AP hide caption

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Fannie Lou Hamer, a leader of the Freedom Democratic party, speaks before the credentials committee of the Democratic national convention in Atlantic City, N.J., on Aug. 22, 1964. AP hide caption

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Paul Moccia of Atkinson, N.H., waits for New Hampshire Senate candidate Scott Brown to be endorsed by Mitt Romney at an event in Stratham, N.H., on July 2. Charles Krupa/AP hide caption

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Uber is hiring David Plouffe, the mastermind of Obama's 2008 campaign, to power its own political strategy. What can a tech-savvy political animal offer a ride-sharing service? Charles Dharapak/AP hide caption

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