Such characters are comparable with today’s moguls. But as president, Teddy Roosevelt showed the courage to shrink the barons ...

Elon Musk’s growing influence in global politics sparks debate about the power of billionaires, as the U.S. inauguration looms.

Mr. Musk has turned to Silicon Valley to help recruit executives who will take up unofficial positions across the federal ...

After helping President-elect Donald Trump return to the White House, Elon Musk is now setting his sights on European ...