A US federal appeal court on Friday ordered President Donald Trump’s administration to stop construction on a US$400 million ballroom on the site of the White House’s demolished East Wing, dealing the Republican leader a major setback in a ‌case testing his presidential authority. The Washington-based US Court of Appeals for the District of Columbia Circuit in a divided 2-1 order upheld a preliminary injunction won by the National Trust for Historic Preservation, which sued last year after the...