
A federal appeals court blocked Trump's 90,000-square-foot White House ballroom without congressional approval. Trump plans to appeal to the Supreme Court, setting up a constitutional clash over executive authority.
A federal appeals court ruled Friday that President Donald Trump cannot build a 90,000-square-foot ballroom on the White House East Wing without congressional approval, a decision Trump called a national security threat and said he would immediately challenge to the Supreme Court.
The U.S. Court of Appeals for the District of Columbia Circuit, in a 2-1 vote, said the president lacks unilateral authority to construct the project. Trump had ordered the East Wing demolished last fall to make way for a ballroom with a capacity of 999 people, a drone port on the roof, and a military complex. The court said in its ruling: "Whether or not a massive ballroom should be constructed is for Congress to decide and is not a matter for Executive self-help."
Trump posted on Truth Social that the decision was a "National Security Threat at the highest level" and a "National Disgrace." He said the administration would immediately appeal to the Supreme Court. The appeals court stayed its order for two weeks, giving the administration time to file.
The case was brought by the National Trust for Historic Preservation, which sued in December shortly after demolition of the East Wing. The group said the ruling upheld "the American people's right to voice their opinions about the historic places they cherish."
This is the second time this week a Trump construction plan was blocked. A National Park Service assessment found that a proposed 250-foot-tall triumphal arch near the Lincoln Memorial could undermine the historical significance of nearby sites. The arch proposal is also facing legal challenges.
The ballroom dispute now heads to the Supreme Court. The outcome could set a precedent on the limits of executive authority over White House grounds, a question that has broader implications for future presidential projects and the balance of power between the executive and legislative branches. Investors in firms that stand to win government construction contracts may face uncertainty if legal challenges continue to stall major projects.
Trump called on the Supreme Court to overturn the ruling "in its entirety." No timeline for the court's decision has been set.
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