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Rep. Dingell: the Democratic caucus wants a “fair trial”

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Rudy Giuliani associate Lev Parnas alleges that President Trump tried to fire former Ukrainian ambassador Marie Yovanovitch “at least 4 or 5 times”. Congresswoman Debbie Dingell (D-MI) joins Ali Velshi to talk about her call for “a fair hearing” as new evidence comes to light.