The Treasury Department said Elon Musk aides detailed to the agency have “read-only” access to its sensitive $5 trillion US payments system and that no payments have been suspended or rejected as part of an ongoing review.

Democratic lawmakers have expressed concern that access to the system could allow DOGE, which disburses nearly 90% of all federal payments, to restrict disbursement of federal funds.

The letter comes after people tied to billionaire Elon Musk gained unusual access to the system.