D.C. and Virginia Sue to Block Trump's Memorial Arch

The District of Columbia and Virginia have filed a joint lawsuit seeking to stop President Donald Trump's proposed 250-foot triumphal arch in Washington, D.C., arguing that the administration is advancing the memorial without completing legally required reviews and approvals. Filed Saturday, October 31, 2026, the challenge targets the project's authorization and potential consequences for the capital's historic landscape.

D.C. Attorney General Brian Schwalb and Virginia Attorney General Jay Jones filed the complaint on behalf of their respective jurisdictions, according to FOX 5 DC. The proposed structure would stand at Memorial Circle on Columbia Island, near the western end of Arlington Memorial Bridge.

The lawsuit describes the project as a “flagrantly unlawful” undertaking. Its allegations include a lack of congressional authorization, violations of the District's building height restrictions, potential disruption to emergency services, increased traffic congestion, and pollution affecting the Potomac River.

The attorneys general also accuse the administration of making “half-hearted gestures” toward complying with mandatory federal review requirements. The complaint argues that the project has advanced without the consultations and approvals required under laws governing memorial construction in Washington.

D.C. Council Chairman Phil Mendelson has formally supported the legal challenge through a declaration submitted to the court. Mendelson also serves on the National Capital Planning Commission (NCPC), the federal body responsible for reviewing the proposed development.

Explaining his position, Mendelson emphasized that the dispute concerns statutory procedures rather than personal preferences about the memorial's appearance.

“Congress established a process for approving memorials in Washington for good reason. What we commemorate, where we commemorate it, and how a memorial fits into Washington's historic landscape are important decisions that deserve careful consideration. The proposed Arch has not gone through that process.

The Commission has been asked to move forward without the information, consultation, and approvals required by law. That prevents me from fully carrying out my responsibilities as a Commission member,” Mendelson said.

The commission approved preliminary site and building plans in July but requested additional information before conducting its final review. Mendelson maintains that proceeding without the necessary documentation prevents commissioners from properly fulfilling their legal responsibilities.

He further clarified the distinction between opposing the design and challenging its approval process.

“This is not about whether one likes or dislikes the Arch. It is about following the law and respecting the responsibilities Congress assigned to the Commission,” Mendelson said.

The legal dispute follows other challenges to the project, including a lawsuit filed by Arlington County over environmental reviews and a separate case brought by a group of Vietnam War veterans. The available reports do not establish whether the courts will consolidate the proceedings.

The lawsuit also follows a federal court hearing on Friday, October 30, when a judge questioned an administration lawyer about plans to begin construction as early as the following week. The judge indicated that she was considering whether to suspend the project.

The latest complaint does not identify the court where it was filed or name the defendants. Federal officials have also not provided a response to the Saturday filing.

The NCPC is scheduled to consider the arch's final site and building plans during a virtual meeting on Thursday, November 5, 2026, at 1 p.m. Members of the public are expected to testify before the commission as the legal challenge proceeds.