Columbia subject headings:
Immigrants--Services for--United States.
Public welfare--United States.
Supplemental security income program--United States.
United States--Emigration and immigration--Government policy.
Harvard subject headings:
Immigrants--Services for--United States.
Public welfare--United States
Supplemental security income program--United States
United States--Emigration and immigration--Government policy.
Princeton subject headings:
Immigrants--Services for--United States.
Public welfare--United States.
Supplemental security income program--United States.
United States--Emigration and immigration--Government policy.