Judiciary chairman: Trump 'must have known' about Russian contact

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Special Counsel Mueller releases a new document laying out exactly what Paul Manafort lied about after he started cooperating with the Russia probe, as Senators grill Mueller’s prospective new boss in confirmation hearings. House Judiciary Chair, Rep. Jerry Nadler, tells Ari Melber that Republicans have “not been playing it straight” by leaking information about a potential investigation and that the leaks “must stop”. Rep. Nadler also tells Ari Melber that if Trump’s nominee for Attorney General wants to “go down in history as someone who helped protect the rule of law” he will ensure that the Mueller probe report is made “public”.