Columbia subject headings:
Harvard subject headings:
Constitutional law--United States
Democracy--United States--Forecasting.
United States--Civilization--21st century--Forecasting.
United States--Politics and government--21st century--Forecasting.
United States--Social conditions--21st century--Forecasting.
Princeton subject headings:
Constitutional law--United States.
Democracy--United States--Forecasting.
United States--Civilization--21st century--Forecasting.
United States--Politics and government--21st century--Forecasting.
United States--Social conditions--21st century--Forecasting.