President Donald Trump’s push to construct a massive ballroom at the White House without congressional approval was sharply questioned by a federal appeals court on Friday during a high-stakes hearing in a case testing the president’s power.

President Trump's White House ballroom plans are in the hands of three appellate judges who will hear arguments over whether construction should be allowed to continue.

Preservationists sue over ballroom construction without authorisationAppeals court allows construction to continue during legal battle, no ruling on merits yetAdministration…