The Alliance for Retired Americans, along with two employee unions, sued the Treasury Department on Feb. 3 to halt Musk and the DOGE team from accessing Treasury’s payment systems, which the lawsuit said consist of “sensitive personal and financial information” about anyone who has made a financial transaction with the government.

President Donald Trump had said the Pentagon would be an early target of Musk's DOGE, which has swept through federal agencies searching for spending cuts as part of Trump's overhaul and shrinking of the U.