Harris seizes on critical comments about Trump from his former chief of staff

Vice President Kamala Harris used reported comments about Donald Trump by John Kelly, his former chief of staff, to ramp up her claims that the former president is unfit to serve. In an interview with The New York Times, Kelly called Trump "an authoritarian" and claimed Trump made complimentary statements about Adolf Hitler. The Trump campaign says he never made the comments. NBC News' Peter Alexander reports.