Trump calls Russian hacking 'a very hard thing to prove'

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Trump walking into his New Year’s Eve party calls Russia hacking “a pretty serious charge” and wants U.S. intelligence “to be sure” before reacting. Paul Singer, Washington correspondent for USA Today, and Yamiche Alcindor, national reporter for The New York Times, weigh in on Trump’s comments and on how they might impact his future relationship with Russia and U.S. intelligence.