President Trump labeled the National Trust for Historic Preservation "treasonists" and accused it of revealing classified military details, escalating a legal battle over his White House ballroom project that has now landed at the Supreme Court.

The administration filed an emergency application with the Supreme Court on Thursday seeking to suspend a federal appeals court injunction that blocks aboveground construction on a 90,000-square-foot East Wing ballroom complex, a project the government describes as an "integrated military complex" vital to national security. Solicitor General D. John Sauer asked the justices to act before August 21, when the injunction is set to halt work on a structure the administration says is already 65 percent complete, Newsweek reported.

Chief Justice John Roberts gave the National Trust until Tuesday to respond. The filing does not ask the Supreme Court for a final ruling on the ballroom's legality, only to keep construction going while the government prepares a full petition for review.

Trump, meanwhile, took to Truth Social with a lengthy broadside against the group that sued to stop the project. He accused its members of disclosing classified security features after military and Secret Service officials allegedly showed them detailed plans and asked them not to file suit.

Trump's post names names and questions standing

In his Truth Social statement, Trump called the organization's name misleading and questioned its legitimacy:

"'The National Trust for Historic Preservation' is a beautiful name, but even their name is fake because when they add the words 'in the United States' to the National Trust for Historic Preservation, it makes it sound like a Governmental Agency, which it is not."

He claimed the federal government stopped funding the Trust in 2005 "because they strongly disagreed with their mission and objectives." That claim comes from Trump's post alone and has not been independently verified.

Trump also targeted Carol Quillen, the former president of the National Trust, saying she "had no background in Historic Preservation" and "has been replaced, unanimously, effective immediately." He compared her departure to what he characterized as a dismissal from Davidson College, another claim the reporting does not independently confirm.

Perhaps most pointed was Trump's accusation that the Trust exposed classified details of the facility despite being warned not to sue. He wrote that military and Secret Service officials showed Trust representatives "detailed plans and specifications of this knitted, unified, and cohesive structure" and asked them to stand down because of the project's top-secret nature. The Trust, in an April filing to U.S. District Judge Richard Leon, said the opposite, that administration officials had declined to share information beyond their public court claims.

That gap between the two accounts sits at the center of the dispute. The administration says the Trust saw classified material and recklessly disclosed it. The Trust says the administration refused to share details. Both cannot be true, and neither side has produced public evidence settling the question.

A $400 million project, 65 percent built, with no clear congressional sign-off

The ballroom project began with the demolition of the White House East Wing in October 2025, Just The News reported. The administration moved forward without explicit congressional authorization, funding the work primarily through private donations. Cost estimates start at $400 million.

The National Trust sued in December, arguing that construction was proceeding without the congressional authorization and legally required reviews the project needs. The case has moved through the federal courts at an unusual pace, driven in part by the speed of the construction itself.

In a 2-1 decision, the U.S. Court of Appeals for the D.C. Circuit upheld a preliminary injunction blocking aboveground work while allowing underground security construction to continue. Judges Patricia Millett and Bradley Garcia concluded that decisions involving substantial changes to the White House rest with Congress, not the president. They described presidents as temporary occupants rather than owners of the property.

The majority wrote that there "was no comparable historical example of a president using privately raised money to demolish and replace a significant portion of the White House without congressional authorization." Fox News reported the full quote from the opinion: "We are aware of no instance in American history in which a President unilaterally and using privately collected funds demolished substantial portions of the White House that Congress authorized to be built and American taxpayers paid for. Until now."

Judge Neomi Rao dissented, arguing the Trust lacked legal standing and that existing laws already gave the president authority to undertake the project. Rao, a Trump appointee, wrote that "the district court elevated the aesthetic displeasure of a single passerby over the government's security interests in the ballroom," Breitbart reported.

The ruling was stayed for 14 days to give the administration time to seek Supreme Court review, a narrow window the Solicitor General used immediately. This is not the first time the administration has moved quickly to challenge an unfavorable ruling at the highest court.

Administration frames the dispute as a national security emergency

The government's Supreme Court filing leans heavily on security. It describes the project as featuring "extensive security features, including bomb shelters, sniper positions, missile-resistant construction, and facilities extending five stories underground." The filing warns that stopping work would leave an unfinished structure creating safety, security, and operational problems at the White House.

The administration also cited specific threats. The New York Post reported that the filing referenced assassination attempts including a threat at the White House Correspondents' Dinner and an Iranian threat during the NATO summit as justification for treating the ballroom as a military necessity.

Sauer's filing argued that the project "has reached a stage at which major design changes are no longer feasible" and contended that Congress has already granted the executive branch sufficient authority to alter and improve the White House and construct buildings within President's Park. It also challenged the Trust's legal standing to bring the suit in the first place.

Trump echoed that standing argument in his Truth Social post, dismissing an unnamed woman, described as a dog walker near the White House, whom he called a "serial plaintiff" and "activist" involved in "much other frivolous litigation throughout the City." He said she had no security clearances, no expertise in national defense, and "her name is not even mentioned as a plaintiff in the case."

The Supreme Court has recently sided with the administration on other high-profile disputes, but this case raises a distinct question: whether a president can demolish and rebuild a significant portion of the White House using private money and without a vote in Congress.

Trust fires back, says administration is racing to outrun the courts

The National Trust responded to the emergency filing on Thursday, accusing officials of trying to "outrun the courts" by accelerating construction and urging the justices to deny the requested stay.

Gregory Craig, the attorney representing the Trust, had already pushed back on the administration's security framing. In an April 26 letter to the Justice Department, Craig called the administration's assertion that the lawsuit placed Trump's life at "grave risk" "incorrect and irresponsible."

The Trust told the court in an earlier filing that the administration's claims about shared classified material were overblown. In its April statement to Judge Leon, the Trust said it "was not privy to details of the underground structure because administration officials had declined to share information beyond their public court claims." That directly contradicts Trump's accusation that Trust leaders were shown, and then leaked, top-secret military specifications.

AP News reported the Trust's response to the Supreme Court application included a sharp warning: "The Administration's transparent efforts to evade the rule of law, frustrate judicial review, and limit the availability of meaningful relief in the courts must stop here."

Democrats in Congress have raised their own questions about the project's financing. Some allege that funds from Trump's tax cuts bill appear to be paying for the ballroom, despite the administration's claim that the work is funded entirely by $400 million in private donations. The administration has not publicly addressed that allegation in detail.

Constitutional questions the Court cannot avoid

The case puts the Supreme Court in an uncomfortable position. The justices must decide, at minimum, whether to let a 65-percent-complete construction project continue while the legal questions are sorted out, or whether to enforce the lower court's conclusion that Congress, not the president, holds authority over major changes to the White House.

The administration's broader legal theory goes further than the ballroom itself. During lower court proceedings, a Justice Department lawyer argued that the government could bulldoze the Statue of Liberty and the White House without affected parties having legal standing to sue, a claim that drew sharp criticism from the bench. The administration has asserted that the president holds "unimpeded authority" to renovate the White House without oversight from Congress or the courts.

That argument echoes other recent disputes over the boundaries of executive power. The Supreme Court has already struck down executive authority in other contexts this term, and the ballroom case could add another chapter to an ongoing tug-of-war between the branches.

The D.C. Circuit majority framed the issue plainly: "Whether or not a massive ballroom should be constructed is for Congress to decide and is not a matter for Executive self-help." Rao's dissent framed it just as plainly from the other direction, arguing that existing statutes already authorize the president to make improvements to the White House grounds.

Several open questions remain. Did military and Secret Service officials actually show classified plans to Trust representatives, as Trump claims? If so, who authorized that disclosure, and does the Trust bear responsibility for information the government itself shared? And if the project truly is a national security necessity, why did the administration proceed without seeking congressional authorization in the first place, authorization that, given Republican majorities, might well have been granted?

The current Supreme Court will have to weigh those questions against a practical reality: a half-built structure sitting where the East Wing used to be, with a deadline of August 21 bearing down.

If the administration's security claims are legitimate, Congress should have been asked to authorize the project from the start. Building first and litigating later is not how constitutional government is supposed to work, no matter who sits in the Oval Office.