The head of the U.S. Social Security Administration has backed down from "shutting down the agency" after a federal judge rebuked him for misinterpreting a court ruling that limited billionaire Elon Musk's access to agency information.

Senate Republicans want Elon Musk to stop talking about Social Security, and the Department of Government Efficiency to leave it alone. Musk’s statement that Social Security is a “Ponzi scheme,”