Rep. Nadler: GOP trying to 'poison' Mueller jury pool

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In a tense house hearing, lawmakers question FBI agent Peter Strzok about allegations of bias against Donald Trump. Ranking member of the House Judiciary Committee, Rep. Jerry Nadler, tells Ari Melber “there is no evidence whatsoever” that Strzok’s opinions “affected any of the decisions made” by him and that the hearing is a “big show” by Republicans as the Mueller investigation heats up.