The billionaire adviser to the president spoke at the beginning of the meeting with the heads of agencies such as the state department and Pentagon.

Before the weekend, the White House felt confident that coordination had been improving between senior staffers and Musk, two of those people said. In the first weeks of Trump’s new administration, some White House officials had expressed concerns over the tactics of Musk’s Department of Government Efficiency,

U.S. President Donald Trump's administration on Wednesday ordered federal agencies to undertake more large-scale layoffs of workers, while the president let downsizing czar Elon Musk take a star role at his first cabinet meeting and discuss his ambitious budget-cutting targets.