Nineteen Democratic attorneys general sued President Donald Trump on Friday to stop Elon Musk’s Department of Government Efficiency from accessing Treasury Department records that contain sensitive personal data such as Social Security and bank account numbers for millions of Americans.

The case, filed in federal court in New York City, alleges the Trump administration allowed Musk’s team access to the Treasury Department’s central payment system in violation of federal law.

The payment system handles tax refunds, Social Security benefits, veterans’ benefits and much more, sending out trillions of dollars every year while containing an expansive network of Americans’ personal and financial data.

The White House did not immediately respond to a request for comment.

Musk’s Department of Government Efficiency, also known as DOGE, was created to discover and eliminate what the Trump administration has deemed to be wasteful government spending. DOGE’s access to Treasury records, as well as its inspection of various government agencies, has ignited widespread concern among critics over the increasing power of Musk, while supporters have cheered at the idea of reining in bloated government finances.

In a statement, New York Attorney General Letitia James, whose office filed the lawsuit, said DOGE’s access to the Treasury Department’s data raises security problems and the possibility for an illegal freeze in federal funds.

“President Trump does not have the power to give away Americans’ private information to anyone he chooses, and he cannot cut federal payments approved by Congress,” said James, a Democrat who has been one of Trump’s chief antagonists. “Musk and DOGE have no authority to access Americans’ private information and some of our country’s most sensitive data.”

Also on the lawsuit are Arizona, California, Colorado, Connecticut, Delaware, Hawaii, Illinois, Maine, Maryland, Massachusetts, Minnesota, Nevada, New Jersey, North Carolina, Oregon, Rhode Island, Vermont, and Wisconsin.

The lawsuit from the attorneys general alleges that DOGE’s access to the Treasury records could interfere with funding already appropriated by Congress, which would exceed the Treasury Department’s statutory authority. The case also argues that the DOGE access violates federal administrative law and the U.S. Constitution’s separation of powers doctrine.

The Treasury Department has said the review is about assessing the integrity of the system and that no changes are being made. According to two people familiar with the process, Musk’s team began its inquiry looking for ways to suspend payments made by the U.S. Agency for International Development, which Trump and Musk are attempting to dismantle. The two people spoke with The Associated Press on condition of anonymity for fear of retaliation.

Separately, Democratic lawmakers are seeking a Treasury Department investigation of DOGE’s access to the government’s payment system.

Also, labor unions and advocacy groups have sued to block the payments system review over concerns about its legality. A judge in Washington on Thursday temporarily restricted access to two employees with “read only” privileges.

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Associated Press writer Dave Collins in Hartford, Connecticut, contributed to this report.