Columbia subject headings:
Criminal justice, Administration of--European Union countries.
Emigration and immigration law--European Union countries.
Harvard subject headings:
Asylum, Right of--European Union countries
Criminal justice, Administration of--European Union countries.
Emigration and immigration law--European Union countries.
European Union
Freedom of movement--European Union countries
Princeton subject headings:
Asylum, Right of--European Union countries.
Constitutional law--European Union countries.
Criminal justice, Administration of--European Union countries--International cooperation.
Emigration and immigration law--European Union countries.
Freedom of movement--European Union countries.
Internal security--European Union countries.