Columbia subject headings:
Americans--Protection--Foreign countries.
Diplomatic and consular service, American--Buildings--Security measures.
Embassy buildings--Security measures.
Illegal aliens--Government policy--United States.
United States. Dept. of State--Appropriations and expenditures.
Harvard subject headings:
Americans--Protection--Foreign countries.
Diplomatic and consular service, American--Buildings--Security measures.
Embassy buildings--Security measures.
Illegal immigration--Government policy--United States.
Noncitizens--Government policy--United States
United States. Department of State--Appropriations and expenditures.
Princeton subject headings:
Americans--Protection--Foreign countries.
Diplomatic and consular service, American--Buildings--Security measures.
Embassy buildings--Security measures.
Illegal aliens--Government policy--United States.
United States. Department of State--Appropriations and expenditures.