Plaintiffs in Trump arch project seek injunction to stop administration from beginning work Nov. 5WASHINGTON — Plaintiffs in a lawsuit trying to stop the Trump administration from building a triumphal arch along the Potomac River asked a federal judge on Thursday to halt all construction plans, one day after the National Park Service signaled it would begin work Nov. 5. The plaintiffs — threePittsburgh Tribune-Review15h agoSources (2)Whole story →GovernmentPlanettrump arch project lawsuit