European Union – Freedom of movement. The Court of Justice of the European Union made a preliminary ruling concerning the interpretation of Directive (EC) 2004/38 of the European Parliament and of the Council (on the right of citizens of the Union and their family members to move and reside freely within the territory of the Member States), amending Regulation (EEC) 1612/68 and repealing various other European Union directives. The request had been made in proceedings between Mr O and the Netherlands Minister for Immigration, Integration and Asylum (the Minister), on the one hand, and between the Minister and Mr B, on the other, concerning the decisions refusing to grant them a certificate of lawful residence as a family member of a European Union citizen in the Netherlands