This chapter interrogates the paradox of regional integration and global migration governance, asking: Who truly benefits from mobility regimes? Drawing on critical migration theory, postcolonial international relations, and border studies, it explores how regional frameworks—such as the EU, ASEAN, GCC, MERCOSUR, and the AU—construct mobility architectures that privilege elite, skilled, and Global North populations while marginalizing low-wage migrants, women, stateless persons, and the undocumented. The chapter contends that far from equalizing opportunity, these regimes reproduce hierarchies of class, race, gender, and nationality. Through comparative analysis and case studies, it demonstrates how visa regimes, legal stratification, and bordering practices function as tools of exclusion. Yet, amid this inequality, migrant-led movements, transnational solidarities, and South–South mobilities are challenging exclusionary models and reimagining regionalism from below. The chapter ultimately calls for a justice-oriented approach to mobility grounded in equity, dignity, and structural reform.