Hallie Jackson asks Sanders: Does Trump truly believe that Dems hate Jewish people?

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MSNBC's Hallie Jackson asked Press Secretary Sarah Sanders: 'Does President Trump truly believe that Democrats hate Jewish people?' Sanders said: "That's a question, frankly, I think you should ask Democrats what their position is, since they're unwilling to call this what it is..." Hallie Jackson provides more analysis on the other key moments at the briefing – the first formal one since since Jan. 28.