http://www.curia.eu.int/en/actu/communiques/cp01/aff/cp0145en.htm


The Court of Justice, called to rule on the compatibility of national immigration legislation with the requirements of the three association agreements concerned, has thus set out the following principles:


- a Member State cannot refuse entry or residence to a national of one of the States concerned, with a view to his establishment, on grounds of his nationality or his country of residence, or because a general limitation on immigration is provided for, not can it make the right to take up an activity as a self-employed person subject to economic considerations relating to the labour market;

http://www.curia.eu.int/en/actu/communiques/cp01/aff/cp0145en.htm