FILE PHOTO: A passenger looks at her phone at Dulles

FILE PHOTO: A passenger wearing a face mask looks at her phone beside an empty security queue at Dulles International Airport, a day after U.S. President Donald Trump announced travel restrictions on flights from Europe to the United States for 30 days to try to contain the spread of the coronavirus, in Dulles, Virginia, U.S., March 12, 2020. REUTERS/Kevin Lamarque/File Photo