A new feud over tariffs is playing out in the White House between two of Trump’s top advisors: Elon Musk and Peter Navarro. Navarro recently suggested on CNBC that Musk's cars are not "American" enough, while Musk responded with a rant of insults against Navarro on X – after calling him a "moron", the tech billionaire said that Navarro's claims are "demonstrably false". We explain in this edition of Truth or Fake.