Abstract
This chapter introduces and discusses the concepts that are in-depth articulated in the volume. International migration is presented here as a test bench where the normative limits of institutional order, its contradictions and internal tensions are examined. Migrations allows to call into question classical political categories and models. Pointing at walls and fences as tools that reproduce enormous inequalities within the globalized neo-liberal system, this chapter presents the conceptual tensions and contradictions between migration policies and global justice. We challenge the conceptualization of justice as a relationship between citizens of the same country and the State and argue that, in our globalized world, nation-state cannot constitute the basic unit of the theories of justice. We argue that an integral approach that includes the complex and interconnected forms of structural inequalities and transcends the borders of national sovereign states is required. Avoiding the methodological nationalism and the exclusionary biases that inform current migration and border control policies, this chapter finally places attention on the most marginalized subjects of the migration chain: migrant women workers. We point out the importance of addressing transnational structural inequalities and bringing social reproduction to the center of global justice theories.