Climatic changes-Government policy-United States 1 Fear 1 Fear-Political aspects-United States 1 Medical policy-United States 1 Polarization (Social sciences) 1 Political aspects 1 Political culture 1 Political culture-United States 1 Political psychology 1 Political psychology-United States 1 Politics and government 1 Psychological aspects 1 Terrorism-Government policy-United States 1 United States-Emigration and Immigration-Government policy 1 United States-Politics and government-Psychological aspects 1 United States-Politics and government-Public opinion 1