Government policy Emigration and immigration 40 Climatic changes 12 Economic aspects 12 Foreign relations 12 International cooperation 12 Immigrants 10 mer ... Foreign economic relations 9 Prevention 9 Terrorism 9 Cultural assimilation 8 Law and legislation 8 Environmental policy 7 National security 7 Emigration and immigration law 6 Agriculture and state 5 Competition, International 5 Equality 5 Foreign workers 5 History 5 Legal status, laws, etc 5 Agriculture 4 Human rights 4 Muslims 4 Noncitizens 4 Political aspects 4 Politics and government 4 Refugees 4 Research 4 Security, International 4 mindre ...