A U.S. federal appeals court ordered the Trump administration to halt above-ground construction of a $400 million ballroom on the site of the demolished White House East Wing, ruling 2-1 that President Donald Trump cannot proceed without congressional approval. The U.S. Court of Appeals for the District of Columbia Circuit sided with the National Trust for Historic Preservation, which sued after the East Wing was razed for the planned 90,000-square-foot venue, but stayed its ruling for two weeks to let the administration seek U.S. Supreme Court review. Below-ground work tied to bunkers and other security facilities can continue under U.S. District Judge Richard Leon's April 16 order.