The European Union has become a region of intense immigration and the movements of third country nationals from outside or within the territory of the Member States has jumped to the top of EC/EU political agenda. Important EC/EU measures have been adopted concerning the most important aspects in the area of immigration since the late eighties. The movements of third country nationals have nonetheless been regulated by EC law, although incidentally, since the origin of the Communities. The analysis covers 50 years of Community immigration history and it studies the changes in the immigration...