Columbia subject headings:
Harvard subject headings:
Medical policy--United States
Obama, Barack
Political campaigns--United States.
Presidents--United States--Election--2008
United States--Economic policy--2009-
United States--Foreign relations--2009-2017.
United States--Politics and government--2009-2017.
Princeton subject headings:
Obama, Barack.
Political campaigns--United States.
Presidents--United States--Election--2008.
United States--Economic policy--2009-
United States--Politics and government--2009-.
United States--Social policy--21st century.