The Trump administration has enacted new rules prohibiting some passengers flying to the United States on foreign airlines from carrying on any electronic devices larger than a cellphone. The new rules apply to passengers flying from airports in Cairo; Istanbul; Kuwait City; Amman, Jordan; Casablanca, Morocco; Doha, Qatar; Jeddah and Riyadh in Saudi Arabia; and Dubai and Abu Dhabi in the United Arab Emirates. The electronic devices are still allowed to be packed into passengers’ checked luggage.