Losing? Trump fears 'Red Wall' collapse as GOP backs Kamala Harris over 'weird' stuff

Kamala Harris and Tim Walz have announced their first joint TV interview, as Harris gains backing from more Republican officials. Meanwhile, the campaigns are clashing over the debate scheduled for next month. MSNBC's Ari Melber reports and is joined by Ameshia Cross. (Check out The Beat's playlist: https://msnbc.com/ari Connect with Ari Melber: / arimelber )