Columbia subject headings:
Emigration and immigration law--United States--Criminal provisions.
Illegal immigration--United States.
Noncitizens--United States.
Smuggling--United States--Prevention.
Harvard subject headings:
Emigration and immigration law--United States--Criminal provisions.
Illegal immigration--United States.
Noncitizens--United States
Smuggling--United States--Prevention.
Princeton subject headings: