While Elon Musk has emerged as one of President Donald Trump's most loyal supporters—backing his policies and contributing over $300 million to his reelection campaign—the tech mogul's companies are now fearful of the unintended consequences of the administration's aggressive trade measures.

Tesla warned of the hit to its bottom line from tariffs, while SpaceX complained that foreign trade barriers affect its Starlink internet satellite service.

Elon Musk is just a little bit less rich today. Wednesday finds Musk, the world’s richest man, with his pockets approximately $110.8 billion lighter than his peak net worth of $464 billion, recorded on December 17,

Tesla has warned that it and other major American exporters are exposed to retaliatory tariffs that could be leveled in response to President Trump’s aggressive use of tariffs. Tesla CEO Elon Musk, a close ally of Trump,

Elon Musk's Tesla warns company could be harmed by Trump's tariffs - Tesla representatives have asked the Trump administration to consider the “downstream impacts” of policies to address unfair trade

Billionaire Elon Musk’s companies, Tesla and SpaceX, have formally raised concerns with the US Trade Representative (USTR), Jamieson Greer, regarding the negative impact of Donald Trump’s tariff policies.

In an unsigned letter to the Donald Trump-led administration, his ally Elon Musk's Tesla has cautioned that the US President's trade war could expose the automaker to retaliatory tariffs and increase the cost of making electric vehicles in America.

Financial markets were in a tailspin after Trump fired thousands of federal employees and slapped tariffs on imports. Here's what could come next.

Protesters gathered outside Encinitas' Tesla dealership "to bring attention to the danger that the Trump/Musk agenda poses," members said.