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President Trump claims universal mail-in voting will be ‘catastrophic’

02:15

President Donald Trump continues to sow distrust in votes cast by mail and claims results could come long after Election Day. Election experts disagree and insist mail-in voting is secure. The president also refused to shut down false “birther” claims about Sen. Kamala Harris’ eligibility to be vice president. NBC’s Kelly O’Donnell reports for Sunday TODAY.