As recently as 2022, billionaire Elon Musk was saying that Donald Trump should "hang up his hat & sail into the sunset." But in recent months, Musk has become one of the most influential supporters of Trump's campaign to regain the presidency, from appearances at rallies to millions of his own dollars in funding.

What prompted his change of heart? And how much might it have to do with the relationship his companies like Tesla, SpaceX and StarLink have with the U.S. government — both in terms of contracts and investigations into regulatory breaches?

Washington Post technology reporter Trisha Thadani explains why Musk is all in on Trump, and what he stands to gain from a second Trump presidency.

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