'Fake news': FMR Republican governor slams Trump for 'corrosive' and 'un-American' efforts to undermine the election

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Former Republican governor Tom Ridge joins MSNBC's Ari Melber to discuss Trump's efforts to push a voter fraud plot and potentially undermine the 2020 election, calling Trump's claims "fake news." Ridge, who officially endorses Joe Biden, compares Trump's efforts to a foreign disinformation campaign and warns of the danger within.