A senior U.S. lawmaker says representatives of Elon Musk were granted “full access” to a U.S. Treasury payments system used to disperse trillions of dollars to Americans each year and warned that Musk’s access to the system poses a “national security risk.”

A Treasury Department official wrote a letter Tuesday to federal lawmakers saying that a tech executive working with Elon Musk's Department

Elon Musk's government-efficiency team has been granted "read-only access" to the U.S. Treasury's payment codes as part of a review they are conducting with the aim to "maximimize payment integrity," a Treasury official wrote in a letter to a senior Democratic U.