The justices took up an appeal by the General Services Administration (GSA), which manages federal government real estate, of a lower court's ruling allowing the lawsuit by U.S. House of Representatives Democrats to proceed. The lawmakers sued after the agency declined to provide details of a 2013 lease of the Old Post Office building to the Republican former president's company to convert it into a hotel.

(Reporting by Andrew Chung in New York; Editing by Will Dunham)

By Andrew Chung