President Trump Claims Universal Mail-In Voting Will Be ‘Catastrophic’ | Sunday TODAY

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.