The Arlington County Board in Virginia filed a lawsuit Thursday opposing the construction of the Triumphal Arch , becoming the first governmental body to take legal action against President Donald Trump’s planned monument . The lawsuit, filed in the Eastern District of Virginia, criticized the speed at which the project slated for Memorial Circle has moved without going through the full review process. “The National Park Service, the agency responsible for projects on national park land such as Memorial Circle, is proceeding full-speed toward ground-disturbing construction,” the lawsuit said. ” The lawsuit asks that “the agency’s feverish pace toward construction of the arch” be halted to ensure that the requirements of the National Environmental Policy Act be followed and proper analysis and testing be done. “The Arlington County Board has filed this lawsuit because our community has the most to lose from this egregious and unlawful proposed project,” Arlington County Board Chair Matt de Ferranti said in a statement. He added that the county has acted in good faith in the review process, pointing out the “severe, unique, and wide-ranging negative impacts” the project will have on the county and its residents, only to see them ignored. Memorial Circle sits on federal parkland west of the Potomac River across the Memorial Bridge and immediately adjacent to Arlington County. The county is being represented in the lawsuit by legal advocacy group Democracy Forward. The White House and Interior Department did not immediately respond to requests for comment. The lawsuit comes just a day after Association of Flight Attendants-CWA President Sara Nelson expressed concerns that the 250-foot (76-meter) arch compounds multiple safety issues that she said have gone unaddressed since a deadly January 2025 crash over the Potomac River that killed 67 people.