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Ari Melber explains why the unprecedented Sam Nunberg interview matters

05:49

Sam Nunberg’s rare inside look at the Mueller probe reveals who Mueller is eyeing, what documents he is seizing and possible clues on Mueller’s strategy. MSNBC’s chief legal correspondent, Ari Melber, explains the legal significance of Nunberg’s risky “on the record” comments in contrast to the flurry of witnesses leaking anonymously.