This chapter explores the intricate relationship between citizenship and migration in a globalized world, highlighting the challenges contemporary migration poses to traditional notions of citizenship. As migration becomes a global phenomenon, characterized by diverse flows and increasing restrictions on immigration, countries face growing pressure to redefine who belongs within civic nations. The discussion includes the emergence of transnational citizenship, changes in identity among second-generation immigrants, and the complex dynamics of belonging amid rising exclusions. Ultimately, the text examines how these shifts influence not only individual rights but also broader democratic frameworks.