The U.S. Treasury Department has given staff from billionaire Elon Musk's so-called Department of Government Efficiency "read only" access to its payment systems, a department official said in a letter sent to Congress.

The US Treasury Department confirmed Tuesday that Elon Musk’s government efficiency team has been given “read-only” access to “coded data” of the government’s payments system.At least one of the appointees from the Department of Government Efficiency,

WASHINGTON—The Treasury Department said Tuesday that it is conducting an “operational efficiency assessment” of its payment systems and that the agency hasn’t suspended or rejected any payment instructions,