Oprah Winfrey listens as then-President Obama introduces her during a presentation ceremony for the Presidential Medal of Freedom in 2013 at the White House.
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CBS News correspondent Bob Simon, seen here in New York City in 2007, won four Peabody Awards and 27 Emmys in a long and distinguished career.
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60 Minutes correspondent Lara Logan was asked to take a leave of absence in the wake of a report that found problems with her Oct. 27 story about the 2012 attack on the U.S. Consulate in Benghazi, Libya.