Trump shakes up campaign staff and expresses "regret"
Special | 23m 28s | Video has closed captioning.
Republican presidential nominee Donald Trump announced a major campaign shakeup as campaign chair Paul Manafort resigned and Breitbart's Steve Bannon and GOP pollster Kellyanne Conway stepped in. Trump also changed up his campaign tone by expressing "regret for some of his past statements. Meanwhile, Hillary Clinton faced new questions about her private email server and her family's foundation.
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