The decision overturns a lower-court ruling that would have limited building until Congress granted additional approvals.
The Court’s Split On Standing
Five conservative justices, including all three appointed by Trump, backed the president. Justices Clarence Thomas, Samuel Alito, Neil Gorsuch, Brett Kavanaugh and Amy Coney Barrett voted to allow the project to proceed.
Chief Justice John Roberts and the court’s three liberal justices dissented. Roberts joined Justices Sonia Sotomayor, Elena Kagan and Ketanji Brown Jackson.
In its unsigned opinion, the court said it had not previously found that a preservationist group had standing to challenge the project in the circumstances presented. The court also said that “mere offense, disagreement, or distaste” does not meet the requirements for bringing the case.
The Supreme Court’s ruling is not a final determination of whether the ballroom is lawful. The matter could return to the court at a later stage, but for now construction can continue without restriction.
Work Continues While The Case Develops
Court records cited in the case indicate that a workforce of about 250 people is working on the ballroom 20 hours a day, seven days a week.
Trump ordered the demolition of the East Wing last fall to make way for a ballroom planned for the White House campus. The project is described as a 90,000-square-foot construction.
The National Trust for Historic Preservation brought the legal challenge, arguing that the work exceeds the authority of the president and should not proceed without Congress sign-off.
The group won in the lower courts. Those rulings held that Congress needed to authorise the relevant steps before construction could continue.
Roberts had allowed the work to proceed briefly while the Supreme Court considered the appeal. In his dissent, he argued that the preservationist group had sufficiently alleged an injury to qualify for a hearing in federal court.
He wrote that the majority had misread the nature of the alleged harm, allowing what he described as a likely infringement on Congress’s power of the purse and on the authority to regulate federal property in the District of Columbia.
“Today’s decision is no victory for the separation of powers,” Roberts said.
Administration Arguments And A National Security Case
The Trump administration argued that approvals already exist because the project is being funded with private money. It also said the preservationist group should not be able to sue, because the group lacked the right to bring the challenge.
Solicitor General D. John Sauer told the justices that allowing the case would “open the courthouse doors” to any person who visits government buildings, historic sites or parks and takes exception to what they see.
As the case has proceeded, the administration increasingly relied on national security. It argued that pausing the project would endanger the president’s safety, pointing to incidents that prompted Trump to take alternative arrangements, including a threat that forced him to board a different aircraft, an alleged plot linked to disrupting a White House UFC event, a shooting at the White House Correspondents’ Association dinner, and shootings at Trump’s Butler, Pennsylvania, campaign rally and near his Florida golf course. The Justice Department said those events involved attempts to assassinate the president.
In filings in recent days, the administration also said the construction is too far along to stop. It indicated the project is about 65% complete, with a concrete-and-steel structure already extending five stories deep and reaching 70 feet high.
The preservationist group countered that the president acts only as a tenant of the White House with limited authority to make major renovations, and that the courts should not permit the work to continue. In its filings, it said there was nothing stopping the challengers from seeking authorisation from Congress and that efforts to block judicial review should not succeed.
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1 September 2026
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