Donald Trump claimed a court order blocking construction of his ballroom was a "national security threat" because of a long list of military uses for the new wing of the White House.

A U.S. federal appeals court ​ordered President Donald Trump’s administration on Friday to stop construction on a $400 million ballroom on the site of the White House's demolished East ‌Wing, dealing ...

The US President, the court said, doesn’t have the unilateral authority to build a 90,000-square-foot ballroom where the White House’s East Wing stood before he ordered its demolition last fall, accor...