Migration has long served as a means for many societies and families worldwide to escape from hunger, poverty, conflict situations, violence, political or economic instability, climate change, or other disasters. In response to this challenge, the United Nations has approached the issue primarily from two perspectives: (1) strengthening global migration governance and (2) promoting a comprehensive approach to migration policies. In recent years, the organization has clearly intensified efforts in both areas. However, its institutional role is being weakened amid current challenges to the international order established after World War II. An uncertain and still-evolving world order, the erosion of multilateral norms, and the rise of new economic and military powers in emerging countries are all diminishing the United Nations’ influence as a political actor on the global stage. Among the findings of our study is that the voluntary character of the United Nations’ objectives, the broad and non-specific nature of its proposals, its limited authority over member states’ policies, and insufficient financial resources all undermine its capacity to effectively organize and regulate international migration flows.