Donald Trump and Fox News are at odds again, after the Republican presidential candidate criticized host Megyn Kelly. "Donald Trump rarely apologizes, although in this case, he should," Fox chief Roger Ailes said. Mark Wallheiser/Getty Images hide caption

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Republican presidential candidates from left, Jim Gilmore, Lindsey Graham, Bobby Jindal, Rick Perry, Rick Santorum, Carly Fiorina, and George Pataki take the stage for a pre-debate forum at the Quicken Loans Arena, Thursday, Aug. 6, 2015, in Cleveland. Seven of the candidates have not qualified for the primetime debate. Andrew Harnik/AP hide caption

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Republican presidential candidates, from left, Lindsey Graham, Ben Carson, John Kasich, Chris Christie, Bobby Jindal, Jeb Bush, Scott Walker and Rick Santorum speak among themselves after a forum Monday, Aug. 3, 2015, in Manchester, N.H. Jim Cole/AP hide caption

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Rupert Murdoch (center) and his sons Lachlan (left) and James (right) are seen in a combination of file photos. Rupert Murdoch, the head of News Corp. and the Fox media empire, says he will hand over the reins of the company. Jason Reed/Reuters/Landov hide caption

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Television personality Bill O'Reilly waits for the start of an event at the White House in February 2014. O'Reilly has for the past week fired back angrily at critics who have accused him of inflating his war-reporting record in a manner similar to suspended NBC Nightly News anchor Brian Williams. Pablo Martinez Monsivais/AP hide caption

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Fox News Channel chief Roger Ailes attends a 2012 Hollywood Reporter celebration of "The 35 Most Powerful People in Media" in New York City. Stephen Lovekin/Getty Images hide caption

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Shepard Smith apologized to viewers Friday afternoon, after his show aired live footage of a man who fled police and then shot himself. Fox News hide caption

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