The tech billionaire has gained tremendous sway over the U.S. government as a senior Trump adviser, even as he has substantial financial interests in China.

More than 50 days into the second Trump administration, the highly scrutinized relationship between President Trump and Elon Musk is showing no signs of a real strain. Trump gave a gaudy show of ...

Underlying the personal feud is Musk's legal challenge to OpenAI, which threatens to slow the company's efforts at a time ...