Columbia subject headings:
Harvard subject headings:
Developing countries--Foreign relations--United States
Imperialism
United States--Emigration and immigration--Government policy.
United States--Foreign relations--Developing countries
United States--Politics and government--2017-2021
Princeton subject headings:
Developing countries--Foreign relations--United States--21st century.
Imperialism.
United States--Emigration and immigration--Government policy.
United States--Foreign relations--Developing countries--21st century.
United States--Politics and government--2017-.