Elon Musk said he expected to "remain a friend and an advisor" to President Donald Trump as his time as a special government employee ends.

President Donald Trump faces the challenge of convincing Republican senators, global investors, voters and even Elon Musk that he won’t bury the federal government in debt with his multitrillion-dollar tax breaks package.

An Oval Office news conference signaled an end to a remarkable period of upheaval across the federal bureaucracy, supervised by Mr. Musk and his cost-cutting initiative.