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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Beyond Brexit: The Policy and Political Lessons for Immigration-Anxious Countries

The UK vote to exit the European Union has given new momentum to euroskeptic, anti-immigration movements elsewhere. Experts discuss the political and policy lessons that can be learned from Brexit and applied to debates in Europe and North America, including how to address public anxiety over immigration and identity, while managing migration in a globalized economy.

Will Britain Leave the EU? The Role of Immigration in Brexit

MPI analysts explore how the migration politics and policies of the UK government influenced the decision to hold the "Brexit" referendum, how public attitudes towards immigration might influence the result, and how the outcome might impact migration policy in the United Kingdom and European Union more broadly.