Columbia subject headings:
International travel regulations--United States.
Passports--United States.
United States. Dept. of State--Officials and employees--Workload.
Western Hemisphere Travel Initiative (U.S.)
Harvard subject headings:
International travel regulations--United States.
Passports--United States.
United States. Department of State--Officials and employees--Workload.
Western Hemisphere Travel Initiative (U.S.)
Princeton subject headings:
International travel regulations--United States.
Passports--United States.
United States. Department of State--Officials and employees--Workload.
Western Hemisphere Travel Initiative (U.S.)