Trump Says Proposed D.C. Triumphal Arch Will Serve as Military Complex

President Donald Trump said Sept. 20 that his proposed 250-foot triumphal arch in Washington would also serve as a "military complex" for snipers, drones and weapons storage. NPR

In a post on Truth Social, Trump said he agreed to convert the project into a "top grade Military Complex/Triumphal Arch" at the strong request of the U.S. Military and for national security purposes. He said the structure would house, store and have the rapid ability to use large numbers of drones and snipers on both roof and plaza areas. He also said it would store large quantities of sniper ammunition.

The administration plans to site the arch between Arlington National Cemetery and the Lincoln Memorial, near the National Mall. Trump has described the design as twice the height of the Lincoln Memorial. The Washington Post reported Sept. 20 that Trump said the arch will be a "top grade" military complex to house drones and snipers. The Washington Post

Trump also said that among 59 top cities and capitals, Washington, D.C. is the only one in the world that does not have a triumphal arch.

The proposal is still under federal review. Interior Secretary Doug Burgum said the administration planned to break ground on the arch within two weeks. That timeline would proceed while final approval from the National Capital Planning Commission and other federal reviews was still pending. The National Park Service review of the proposal drew more than 100,000 public comments.

Legal action has paused any early work. U.S. District Judge Tanya Chutkan ordered the government to give the court 48 hours' notice before moving forward with any activity on Memorial Circle. The order warned that any construction or demolition before the National Park Service issues final authorization would be a violation of the court.

The order came in a lawsuit filed by a group of Vietnam War veterans and an architectural historian. The plaintiffs said the arch would desecrate the hallowed grounds of Arlington National Cemetery. They also said the president does not have authority to build the arch without approval from Congress.

The broader context here is process and enforcement. For practitioners, the sequence matters more than the design description. A project sited on Memorial Circle must clear National Park Service authorization and National Capital Planning Commission review, and the district court has now attached a notice requirement and a warning against pre-authorization work. The congressional-authority argument raises a separate question that courts, not agencies, will resolve. What to watch is narrow: whether the administration provides the 48-hour notice, whether the Park Service issues a final decision, and whether the commission acts before any groundbreaking date.

Looking at what this means for Washington land-use fights, the comment volume signals sustained opposition that agencies will need to address in the record. The combination of a high-visibility White House proposal, an active docket, and pending commission review leaves little room for informal timelines. Every next step will be documented.