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Trump 'blowing it'? Closing message boomerangs
NBA star LeBron James has endorsed Kamala Harris, while Jennifer Lopez has also joined Harris on the campaign trail. MSNBC’s Ari Melber reports on the latest developments. (The Beat's YouTube playlist: https://msnbc.com/ari Ari: www.youtube.com/arimelber Beat merch: www.msnbc.com/Beat5)