Construction of a $400 million ballroom at the former East Wing site is accelerating after the Supreme Court ruled that a member of the National Trust for Historic Preservation likely lacked standing to challenge the project. The decision lifted the barrier created by lower-court injunctions and allowed around-the-clock work on the above-ground structure to continue, while avoiding the separate question of whether President Trump could demolish the East Wing without congressional approval. Trump said the project was under budget and ahead of schedule, and the administration has described the ballroom as important to national security after recent attempts on his life. Legal experts said the ruling leaves Congress as the only viable challenger and warned that construction could be complete before courts decide the merits. The case reflects the Trump administration’s broader use of the Supreme Court’s emergency docket, including rulings involving mail-in voting, deportations under the Alien Enemies Act, foreign aid, grant funding and the Education Department. Analysts say procedural wins on standing or related jurisdictional issues can allow the administration to claim victory even when the underlying legality remains unresolved.