President-elect Donald Trump on Tuesday said Elon Musk and former GOP presidential candidate Vivek Ramaswamy will lead a new “Department of Government Efficiency" — which is not, despite the name, a government agency.

The move comes after Musk became one of Trump's staunchest supporters, and biggest financial backers, during the last stage of his presidential campaign

Trump is expected to make Marco Rubio his secretary of state, make Kristi Noem his secretary of homeland security and name Stephen Miller and Mike Waltz to key White House posts.