The Trump administration has focused its latest attacks on federal workers and foreign aid. At the forefront of that battle is advisor Elon Musk and the Department of Government Efficiency, or DOGE.

After helping President Trump get elected, Elon Musk was poised to dominate the country’s A.I. policies. Then Mr. Altman ...

Much of the billionaire’s handiwork — gaining access to internal systems and asking employees to justify their jobs — is ...