Elon Musk’s blowup with President Donald Trump may have doomed Washington’s most potent partnership, but the billionaire’s signature cost-cutting project has become deeply embedded in Trump’s administration and could be there to stay.

At the Department of Energy, for example, a former member of the Department of Government Efficiency is now serving as the chief of staff.

At the Interior Department, DOGE members have been converted into federal employees and embedded into the agency, said a person familiar with the matter, who spoke on condition of anonymity out of fear of retaliation. And at the Environmental Protection Agency, where a spokesperson said that there are two senior officials associated with the DOGE mission, work continues apace on efforts to dismantle an agency that Trump has long targeted.

“They are still internally going forward; we don’t really feel as if anything has stopped here,” said Nicole Cantello, a former lawyer for the EPA who represents its union in Chicago.

Whether DOGE keeps its current Musk-inspired form remains an open question.

Some DOGE members Friday expressed concern that the president could choose to retaliate against Musk by firing people associated with the initiative. Others could choose to leave on their own, following Musk out the door. And DOGE’s role and even its legality remain the subjects of legal battles amid questions over its attempts to use sensitive government data.

But the approach DOGE embodied at the outset — deep cuts in spending, personnel and projects — appears to have taken root.

Even with Musk on the sidelines, DOGE on Friday notched two legal victories.

The Supreme Court said it can have access to sensitive Social Security data and ruled that, for now, the organization does not have to turn over internal records to a government watchdog for a public records lawsuit.

DOGE staffers are becoming “far more institutionalized” within agencies, said Russell Vought, director of the White House Office of Management and Budget, appearing before lawmakers June 4, a day before Musk and Trump fell out.

Vought, who has been a behind-the-scenes driver of the program to shrink government even as Musk took the spotlight as its celebrity spokesperson, said he envisioned DOGE staff working “almost as in-house consultants as a part of the agency’s leadership.”

Harrison Fields, a White House spokesperson, said in a statement: “The mission of eliminating waste, fraud and abuse is a part of the DNA of the federal government and will continue under the direction of the president, his Cabinet, and agency heads to enhance government efficiency and prioritize responsible stewardship of taxpayer dollars.”

With DOGE, Musk sought to orchestrate an extensive overhaul of the government. He promised to eliminate almost one-third of the federal budget, $2 trillion, and remake federal agencies into streamlined, tech-oriented entities that operated just like his businesses.

The billionaire adopted the same playbook he used to take over his social media company, then known as Twitter, in 2022. Guided by DOGE, the administration urged staffers to resign from their jobs and laid off even more; canceled leases and demanded workers return to offices; slashed contracts; and rooted out programs that Trump and Musk disfavored, like those focused on diversity and inclusion.

Musk’s cost-cutting target was later revised, dropping from $2 trillion to $1 trillion, and then down to $150 billion. The group’s website claimed it saved $180 billion, but its calculations have been inflated by significant errors and guesswork.

The group’s errors have included posting claims that confuse “billion” and “million,” double-counting contracts, claiming credit for canceling programs that had been dead for years, and boasting about cuts that had been reversed.

Courts blocked some of DOGE’s initiatives, some dismissed employees were reinstated when their work proved to be essential, and congressional appropriations kept many funds beyond Musk’s grasp.

All told, DOGE has tried to gain entry to more than 80 data systems across at least a dozen agencies, according to New York Times efforts to track the group’s data access. Those data sets include systems that hold personal information about federal workers, detailed financial data about federal procurement and spending, and intimate personal details about the American public.

Days before his departure, Musk was optimistic about the legacy he was leaving in D.C. DOGE’s mission, he said on X, “will only strengthen over time as it becomes a way of life throughout the government.”

But by June 3, Musk was fretting that his accomplishments were being washed away by the Trump policy bill making its way through Congress. The bill “more than defeats all the cost savings achieved by the @DOGE team at great personal cost and risk,” he wrote on X.

Nonetheless, the DOGE imprint can be seen across the government.

One of DOGE’s most prominent members, billionaire Airbnb co-founder Joe Gebbia, is planning to remain in government, according to the Office of Personnel Management. Gebbia, a close friend of Musk, is working on a project to digitize the federal government’s slow and paper-based retirement process.

Carl Coe, who had led DOGE efforts in the Energy Department, was named chief of staff May 2.

Coe, who had a background in software development, had been working with 40 offices with the Energy Department on “process improvement and cost savings,” the agency said. In recent weeks, the Energy Department has begun canceling billions of dollars in Biden-era awards to companies trying to demonstrate technologies that might one day help tackle global warming.

At the EPA, Cantello, the union lawyer, said she expected no change in the administration’s mission to overhaul the agency. She said it was acting on proposals articulated in Project 2025, the conservative policy blueprint for a Trump presidency, with DOGE employees working hand in hand with Lee Zeldin, the EPA administrator.

At the Interior Department, ex-DOGE employee Tyler Hassen has assumed the powerful role of acting assistant secretary of policy, management and budget.

Hassen oversees human resources, training, grants and contracts, and has the authority to fire people without approval from Interior Secretary Doug Burgum, according to the order under which Burgum assigned Hassen the role. As of Friday morning, Hassen was still in that role, according to a memo from Burgum.