Ad hoc query, requested on April 14, 2011 by the European Commission concerning the conditions of acquiring citizenship in the different Member States of the European Union. 22 responses

Ad hoc query, requested by the Swedish NCP concerning the possibilities for third-country students to remain in a European Union Member State after completing their studies in the EU. 20 responses

Ad hoc query, requested on February 16, 2011, by the Dutch NCP concerning foreign national passports, sent by mail to the holder or a family member (so-called 'blank passports'). 16 responses

Ad hoc query, requested on April 18, 2011 by the Hungarian NCP concerning marriages of convenience in the European Union. 18 responses

Ad hoc query, requested on February 23, 2011 by the Belgian NCP concerning methods to determine the origin of irregular migrants by language analyses. 16 responses

Ad hoc query, requested by the Belgian NCP on 18 February 2010 concerning a possible increase of asylum applicants from Macedonia, Serbia and Montenegro due to the lifting of visa obligations for citizens of those countries - 17 responses

Ad hoc query, requested by the Polish NCP concerning the different systems of reception centres in the EU - 12 responses

Ad Hoc Query, requested by the Austrian NCP on 26 July 2010 concerning enhanced cooperation between member states and certain countries of origin - 18 responses

Ad Hoc Query, requested by the Swedish NCP on 1 February 2010 on Female Genital Mutilation (FGM)- related asylum claims in the EU - 18 responses

Ad Hoc Query, requested by the Belgian NCP on 3 March 2010 concerning the issuing of residence permits for medical reasons - 18 responses

Ad Hoc Query, requested on 3 November 2010 by the European Commission concerning the recognition of professional qualifications of third-country nationals in the member states - 15 responses

Ad Hoc Query, requested by the Swedish NCP on 24 August 2010 concerning the issuing of EU Laissez-Passer for return of third country nationals - 20 responses

Ad hoc query requested by the Belgium NCP on 12 October 2010 concerning recent data about asylum applicants from Macedonia, Serbia and Kosovo - 13 responses

Ad-Hoc Query, requested by the Belgian NCP on 12 May 2010 concerning granting of protection to so called 'Réfugié Sur Place' in EU member states - 14 responses