Democratic attorneys general in several states are vowing to file a lawsuit to stop Elon Musk’s Department of Government Efficiency from accessing federal payment systems containing Americans’ sensitive personal information.

The assessment, done by the contractor Booz Allen, came before Treasury formally tapped an ally of Elon Musk to oversee the payment system.

The Treasury Department will make an ally of billionaire Elon Musk’s U.S. DOGE Service the head of the department that oversees the nation’s powerful payment systems after ousting the career civil servant who previously held the post,