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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A Turning Point for the Unauthorized Immigrant Population in the United States

The unauthorized immigrant population in the United States stood at approximately 11.2 million people in mid-2021, with larger annual growth than at any point since 2015, according to MPI's latest estimates. Even as the Mexican unauthorized immigrant population continued its decade-long decline, there were new entrants from a growing array of other countries.

Vice President Kamala Harris participates in a DACA roundtable

A Shrinking Number of DACA Participants Face Yet Another Adverse Court Ruling

The DACA program has received another blow to its survival, with a federal court once again ruling that the executive branch exceeded its authority in creating the program. But with litigation likely to continue for years, it is attrition that is actively reducing the program. This commentary examines the shrinking population of DACA holders, as well as those who have been locked out from participating.

President Biden meets with DACA recipients

Haitians Flee a Nation Nearing Collapse

Gang violence, political collapse, and economic freefall are driving record Haitian emigration, with hundreds of thousands on the move and few destinations offering safe harbor.

Haitians at a medical site in Jeremie, Haiti.