Preservation Group Urges Justices: Keep Trump's WH Ballroom Paused

The organizations are not plaintiffs or parties to the lawsuit but have weighed in as "friends of the court" in support of the National Trust's arguments.

The coalition includes the American Society of Landscape Architects, Association for Preservation Technology, Coalition to Protect America's National Parks, Committee of 100 on the Federal City, Cultural Landscape Foundation, D.C. Preservation League, National Mall Coalition, National Preservation Partners Network, Olmsted Network and Society of Architectural Historians.