Tesla remains Musk’s best-known business, but its fortunes are less directly tied to the government than SpaceX, his rocket-building company.

President Donald Trump on Tuesday threatened to cut off the billions of dollars in subsidies that Elon Musk’s companies receive from the federal

Elon Musk's feud with President Donald Trump has reignited, with the tech billionaire threatening to launch a new political party and Donald Trump suggesting Musk could be punished for his opposition.