Unauthorized Immigration/Irregular Migration

Explore all research, analysis, commentary, and data on unauthorized immigrants and irregular migrants, terms used in different parts of the world to describe the individuals who lack the right to reside legally in their country of destination, as well as the policies and enforcement practices affecting them.

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Lessons from Europe: The U.S. opportunity to rethink the links between development assistance and migration

As the United States embarks on a new strategy to address the root causes of migration and displacement from Central America, there is much that it can learn from Europe's experience in linking up migration and development aid. This commentary examines the experience of the EU Emergency Trust Fund for Africa (EUTF), drawing five key lessons directly applicable to the situation in Central America.

Photo of woman in Central African Republic participating in cash for work program

EU Strategy on Voluntary Return and Reintegration: Switching perspectives?

In April 2021, the European Commission took a step toward the creation of a common EU return system, releasing its first Strategy on Voluntary Return and Reintegration. This MPI Europe event examines origin- and destination-country policy priorities surrounding return, opportunities for cooperation, and possible next steps in policy development. 

Building Effective Migration Management Capacity in Mexico and Central America

This report release event examines migration management in Mexico and Central America, and the growing government attention to migration functions, enhanced immigration enforcement, increased investments in asylum systems and existing protection frameworks, as well as labor migration policies. The discussion explores strategies that regional and U.S. governments, as well as civil society, can employ to better manage migration, as governments in the region are being confronted with rapidly changing migration trends.