Faiz Shakir on Bernie Sanders’ return to the campaign trail: ‘His heart has always been with the working class of America’

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Senator Bernie Sanders says he is back. But a new Iowa Democratic Presidential Caucus poll shows the Vermont senator in fourth place, falling behind Former Vice President Joe Biden, Senator Elizabeth Warren and South Bend Mayor Pete Buttigieg. Campaign Manager for Bernie Sanders Faiz Shakir joins Katy Tur to discuss.