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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Restoring Trust in the Management of Migration and Borders (Transatlantic Council Statement)
Restoring trust in migration and borders requires predictable rules, credible enforcement, risk-based systems, and clear communication about goals and trade-offs.
Immigrant Detention under Scrutiny in Australia, United Kingdom, and United States
Immigrant detention in Australia, the United Kingdom, and the United States faced backlash in 2011.
Regularizations in the European Union: The Contentious Policy Tool
Despite controversy, EU governments have regularized more than 5 million unauthorized immigrants since 1996, using varied programs to tackle informal work and pursue humanitarian aims.
Shared Challenges and Opportunities for EU and U.S. Immigration Policymakers
Despite institutional differences, EU and U.S. policymakers confront shared migration challenges and openings for mutual learning.
Immigration Enforcement in the United States
U.S. apprehensions fell to a 38-year low in 2010.
The Governance of International Migration: Defining the Potential for Reform in the Next Decade (Transatlantic Council Statement)
A Transatlantic Council on Migration agenda urges more coherent, flexible migration governance that expands legal channels to reduce irregularity and links mobility with development.
Through the Prism of National Security: Major Immigration Policy and Program Changes in the Decade since 9/11
What were the most significant changes that occurred in the immigration arena in the decade since the September 11, 2001 attacks? This conversation explored.
U.S. Immigration Policy since 9/11: Understanding the Stalemate over Comprehensive Immigration Reform
Post‑9/11 enforcement expansions, partisan polarization, and complex trade‑offs have stalled comprehensive U.S. immigration reform.
Through the Prism of National Security: Major Immigration Policy and Program Changes in the Decade since 9/11
Since 9/11, U.S. immigration has been reshaped around national security, with the creation of DHS, expanded data sharing, nationality-based screening, and higher enforcement.
U.S. Immigration Policy and Mexican/Central American Migration Flows: Then and Now
Migration from Mexico and Central America has surged and diversified since the 1970s, while U.S. policy choices since 1965 built unauthorized flows that now constrain reforms.