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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Climate Change, Migration & Conflict in Afghanistan and Pakistan
In regions where climate change and prolonged conflict intersect, how do compounding pressures shape who moves, where they go, and whether they can return?
Visual Portrayals of Migrants as Threats or Victims Are Reductive—But Can Have Far-Reaching Impact
Images of migrants as threats or victims dominate public discourse and drive policy, but reductive visual narratives strip individuals of agency and rarely reflect the full human story.
Trump Administration Bends U.S. Government in Extraordinary Ways towards Aim of Mass Deportations
The Trump administration has bent virtually every arm of the U.S. government toward mass deportations, but early results reveal a gap between ambition and available resources.
ICE Arrests and Deportations from the U.S. Interior
Learn how U.S. Immigration and Customs Enforcement works within the U.S. interior, identifying people for arrest, detention, and removal.
Arrestos y deportaciones de ICE desde el interior de Estados Unidos
Esta guía explicativa tiene respuestas a preguntas comunes sobre la función del Servicio de Inmigración y Control de Aduanas (ICE, por sus siglas en inglés) de EE. UU., en la identificación de personas para arresto, detención, y deportación.
The Unauthorized Immigrant Population Expands amid Record U.S.-Mexico Border Arrivals
The U.S. unauthorized immigrant population stood at 13.7 million as of mid-2023. The result of strong U.S. economic recovery from the pandemic and displacement in Latin America, the increase in the size of the unauthorized population is accompanied by a diversifying makeup in nationalities. As Mexico's share of the overall unauthorized population has declined, the shares from Central and South America, in particular, have increased.
Amid Tariff Threats, Migration Management Is Key to the Evolving Trump-Sheinbaum Relationship
The Trump administration is threatening tariffs on Mexico to achieve migration management aims, as it did in 2019. The landscape is far different in 2025, though. Mexican cooperation is at far higher levels than in 2019 and Mexico is essential to many of the Trump border goals—giving it greater leverage than before. Negotiations that recognize both countries' goals, capacities, and legal frameworks are essential to effective outcomes, this short read argues.
Entre amenazas arancelarias, la gestión de la migración es clave para la evolución de la relación Trump-Sheinbaum
La administración Trump amenaza con imponer aranceles a México para lograr sus objetivos de gestión migratoria, como lo hizo en 2019. Sin embargo, el panorama es muy diferente en 2025. La cooperación mexicana para el control migratorio alcanza niveles mucho más altos que en 2019, lo que le otorga mayor influencia que antes. Este Foco analítico sostiene que las negociaciones que reconozcan los objetivos y las capacidades de ambos países son esenciales para lograr resultados efectivos.
Reaching Irregular Migrants in Europe: Harnessing the value of counselling
Connecting with and providing counselling to irregular migrants is crucial for addressing irregular migration in Europe. This webinar explored outreach and counseling strategies for irregular migrants in Europe and related policies.
With “Shock and Awe,” the Second Trump Term Opens with a Bid to Strongly Reshape Immigration
The Trump administration's second term opened with an unprecedented sweep of executive actions focused on mass deportations and border shutdowns, although hurdles await.
