The city of Philadelphia sued the Department of the Interior and the acting director of the National Park Service on Thursday over reports that slavery exhibits were being dismantled in the city’s historic district. The suit, filed in federal court, seeks a preliminary injunction to restore the exhibits at the President’s House Site, part of Independence National Historical Park. The lawsuit says that “the National Park Service has removed artwork and informational displays at the President’s House site referencing slavery, presumably pursuant to the mandate” of Executive Order No. 14253, which President Donald Trump signed in March. The city said...