President Trump's long-contested triumphal arch just got a lot more complicated. Trump now says the 250-foot structure planned for Memorial Circle, at the Virginia end of Arlington Memorial Bridge, will double as a military installation — stocked with drones, rooftop snipers and ammunition storage — a reclassification the White House says came at the request of the Pentagon for "National Security purposes."

The announcement, detailed in NPR's follow-up reporting Tuesday, lands the project squarely in the middle of an ongoing federal lawsuit. A group led by three Vietnam War veterans and an architectural historian sued earlier this year, arguing the arch would desecrate hallowed ground near Arlington National Cemetery and that Trump lacks the authority to build it without Congress signing off, as required under the 1986 Commemorative Works Act.

U.S. District Judge Tanya Chutchin has already ordered the government to give the court 48 hours' notice before any construction or demolition activity on the site, warning that breaking ground before the National Park Service issues final authorization would violate her order. That approval, along with sign-off from the National Capital Planning Commission and a Federal Aviation Administration safety review — one that never anticipated military drones flying near Reagan National Airport — is still outstanding.

"Fundamentally Illegal"

Attorneys for the plaintiffs say slapping a military label on the project doesn't fix its underlying problem.

"The President's new justification for this wildly unpopular construction does nothing to cure its fundamental illegality."

That's Nicolas Sansone of the Public Citizen Litigation Group, which is representing the veterans, quoted in Reason's Tuesday report on the escalating fight. Yale Law School's Harold Hongju Koh went further, calling the security rationale "laughable and pretextual." Rep. Don Beyer (D-Va.), whose district borders the site, dismissed the drone plan as "stupid, dangerous, and unworkable."

The project's price tag has ballooned alongside the controversy — cost estimates now run as high as $100 million, with $15 million already allocated from the National Endowment for the Humanities and a $500,601 planning contract awarded to architecture firm OTAK. Public appetite hasn't followed the spending: a Washington Post-ABC News-Ipsos poll found just 21% of Americans support the arch, with 41% strongly opposed.

Trump first floated the project in 2024, and the Commission of Fine Arts approved an initial design in May. Interior Secretary Doug Burgum announced the military designation in early September before Trump himself confirmed the drone-and-sniper details this week. The White House argues a 1925 congressional authorization for two columns at the bridge's Virginia approach already covers the arch, though that measure never mentioned a triumphal structure of any kind.

What happens next runs on two tracks. Chutchin has not yet ruled on the core legal challenge, and construction cannot lawfully begin until the Park Service, the Planning Commission and the FAA all sign off — reviews that remain incomplete. Meanwhile, with the midterms seven weeks away, Democrats on Capitol Hill are weighing whether to try to force a congressional vote blocking the funding outright, a fight that would test how much appetite Republicans have for defending a deeply unpopular monument heading into November.