This paper analyses local integration policies for immigrants as well as the social and political integration of immigrants belonging to the upper socio-professional categories. Comparing two cities in France (Mérignac) and Québec (Brossard), the authors first try to identify the variables structuring the elaboration of local integration policies. The underlying theoretical aspect of this research is to describe the emergence of policy windows which allows the municipalities to get involved in a political field formerly outside their political sphere of competence. It is also demonstrated that the municipalities aligned with the national integration models (assimilationism and interculturalism). In a second stage the reception by the immigrants of these local policies as well as their integration process is examined. Immigrants' discourses confirm the emergence of policy windows and the alignment of the municipal level with the upper government levels.