Construction of a $400 million ballroom at the former East Wing site is accelerating after the Supreme Court ruled that a National Trust for Historic Preservation member likely lacked standing to challenge the project. The ruling lifted lower-court injunctions and allowed around-the-clock above-ground work to continue, but did not decide whether President Trump had congressional authority to demolish the East Wing without congressional approval. Trump said the ballroom was under budget and ahead of schedule, while the administration called it important to national security after recent attempts on his life. The ballroom is part of roughly half a dozen construction and renovation projects Trump is pursuing around Washington as the war with Iran continues, including a planned 250-foot triumphal arch near Arlington National Cemetery and changes at the Kennedy Center, where the board voted to add Trump’s name and removed the outdoor sculpture "Blue."