In Washington D.C., where stone and law have long negotiated the shape of national memory, President Trump has proposed a triumphal arch and declared that its protection demands snipers and drone surveillance in the name of national security. The claim arrives not in a vacuum but alongside a federal court's examination of whether the project is legally permissible at all — a rare moment when a monument's ambition and its justification are both simultaneously on trial. How a nation chooses to commemorate itself, and what machinery it deploys to guard that choice, speaks to something deeper than