Résumé : It is often said that European Immigration Policy has been converged to civic integration policy, which requires immigrants to learn the culture, history, and language etc. of the host country. That trend of convergence is sometimes regarded as the European retreat from multiculturalism, and sometimes even as convergence to the assimilationism, and so called 'fortress Europe.' This doctoral thesis is aiming at attaining more sophisticated understanding of this phenomena, by conducting analyses both at the national level and European level. At national level, it challenges the common wisdom that civic integration basically aims at restricting migrants and tries to revalorize national citizenship, through comparative analysis of the Dutch and the German party politics at the stage of legislating key national civic integration policy. By doing so, it found that the diversity of national civic integration policy from liberal to restrictive. At the EU level, it challenges the assumption that the EU played a role in uploading national interests and promoted European convergence towards restrictive immigration policy. Through the analysis of each EU institution's attitude and their influence over national immigration policy. It tries to figure out the processes of negative Europeanization where the effects of EU laws and soft governance tools of the commission actually pre-emptively guide the national policy towards rather modest civic integration, and even prohibited national member states from adopting very restrictive policy at national level. From the combination of those findings, the thesis tries to propose new model of immigrant integration and citizenship acquisition, that is, 'phased integration model'. It interprets the convergence towards civic integration as institutionalization of immigrant integration path in each member states.