On November 5, 2026, three veterans and a retired architectural historian filed a lawsuit asking U.S. District Judge Tanya Chutkan to block the start of construction on a triumphal arch planned for the Potomac River in Washington, D.C.
The suit was filed after the National Park Service announced it would begin work on the arch on that date, prompting the plaintiffs to seek a court order to halt the project. They contend the Trump administration should not proceed with building the arch, citing concerns that were not detailed in the filing.
The plaintiffs request an injunction to prevent the National Park Service from commencing construction of the arch.