Musk, a long-time critic of tariffs, branded Navarro a “moron” and “dumber than a sack of bricks” on Tuesday morning, after the trade adviser dismissed him on television as a mere “car assembler” protecting his own business interests. The heated exchange reflects growing tensions between Musk and the Trump administration, despite Musk’s deep financial and political investment in Trump’s presidency.
The feud follows Musk’s recent criticism of sweeping new tariffs imposed by the White House — policies that threaten to hurt Tesla, SpaceX, and other ventures under Musk’s sprawling business empire. Musk, who leads the so-called Department of Government Efficiency (Doge), has increasingly signaled dissatisfaction with U.S. trade policy under Trump, even as he remains a major political backer.
Over the weekend, speaking virtually at a conference hosted by Italy’s far-right deputy prime minister Matteo Salvini, Musk advocated for a “zero-tariff situation” between the U.S. and Europe, essentially calling for a transatlantic free trade zone. He later posted a video on X (formerly Twitter) featuring economist Milton Friedman championing globalization, adding to speculation about Musk’s shift toward libertarian free-market rhetoric.
Meanwhile, Musk’s brother Kimbal — a Tesla and SpaceX board member — also weighed in, slamming Trump’s tariffs as “a structural, permanent tax on the American consumer.” In a widely shared post on X, he argued the levies would reduce consumption and cost jobs.
The Financial Times reports that Musk’s influence in Washington is already under strain. His preferred candidate in a recent Wisconsin Supreme Court race was soundly defeated, interpreted by many as a backlash against Musk’s role in government cost-cutting through Doge. The White House has since confirmed that Musk’s position could end “within weeks” once his Doge mandate concludes, with President Trump suggesting Musk may soon return “full time” to his private ventures.
The tariff dispute comes amid real financial consequences for Musk’s companies. Tesla’s stock has plunged over 35% since the start of the year, as investors grow wary of a potential trade war. The electric carmaker, which relies heavily on exports and maintains a major factory in China, warned in a recent letter to U.S. Trade Representative Jamieson Greer that tariffs could lead to retaliatory measures and raise the cost of American manufacturing.
SpaceX’s satellite internet service Starlink has also suffered, reportedly losing contracts with several foreign governments as U.S. trade tensions escalate — particularly with China and the EU.
Though neither Musk nor Navarro responded to direct requests for comment, the White House stood by Navarro and downplayed the feud. Press secretary Karoline Leavitt offered a characteristically blunt response to the Financial Times: “Whatever. We are the most transparent administration in history, expressing our disagreements in public.”
As Musk’s frustrations spill further into public view, analysts say the clash underscores growing fractures within the coalition that once united Silicon Valley capitalists and populist conservatives around a shared disdain for government bureaucracy. Now, the future of Musk’s political role — and his alliance with the Trump administration — appears more uncertain than ever.
