Who do you trust on new Obamacare repeal: Trump or Christie?

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Governor Chris Christie (R-NJ) says he's opposed to the new Graham-Cassidy Obamacare repeal bill because it is "injurious" to his state, but the senators who wrote it and Pres. Trump keep pushing it. Neera Tanden, Howard Dean & Julie Rovner join Lawrence O'Donnell.