The delay reflects lingering concerns over legal liabilities stemming from a White House maneuver to transform a sale between the U.S. and Qatar into a “gift.”

Legal teams for the U.S. and Qatari governments are still working out the details of an agreement for Doha to transfer a luxury Boeing 747-8 jet that President Trump hopes to use as Air Force One, more than a week after the Pentagon said it had taken physical possession of the aircraft.