The degree to which Donald Trump and Elon Musk’s interests are intertwined is unprecedented—and ultimately unsustainable.

Musk’s loyalists at DOGE have infiltrated dozens of federal agencies, pushed out tens of thousands of workers, and siphoned ...

Mr. Musk’s Department of Government Efficiency has largely been shrouded in secrecy, but court cases are one way opponents of ...

The U.S. Postal Service has long struggled with its finances. President Trump and Mr. Musk have both suggested it should be ...

The unannounced visit suggests Musk’s drive to slash the federal workforce now extends to a secretive agency known as the ...