A US judge has halted construction of a $400 million White House ballroom project, citing Trump's alleged authority violations. The National Trust for Historic Preservation had sued to stop the project, and the judge granted a preliminary injunction.

A US judge blocked Donald Trump on Tuesday from proceeding with construction of a US$400 million ballroom on the site of the White House’s demolished East Wing, halting for now one of the Republican president’s most visible efforts to reshape the seat of American power. US District Judge Richard ‌Leon granted a request for a preliminary injunction by the National Trust for Historic Preservation, a non-profit organisation that brought a lawsuit alleging Trump exceeded his authority when he razed....