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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The Department of Homeland Security's First Year: A Report Card on Immigration

One year in, the Department of Homeland Security showed real gains in border and interior enforcement. But its promise was hampered by case backlogs and poor internal coordination.

Funding for Immigration in the President's 2005 Budget

The United States and Mexico: Immigration Policy and the Bilateral Relationship

Bush Boosts Immigration Enforcement in FY 2005 Budget

President George W. Bush's fiscal year 2005 budget doubled worksite enforcement, while the cap of 65,000 U.S. H-1B visas was hit early.

Belgium's Undocumented Hold Lessons for EU

Interviews with 130 undocumented migrants in Belgium showed motivations are complex, challenging EU migration policy assumptions.

NAFTA's Promise and Reality: Lessons from Mexico for the Hemisphere

NAFTA failed to curb unauthorized immigration from Mexico—but the reasons were economic crises, demographics, and social ties, not the trade deal itself.

Turkey: A Transformation from Emigration to Immigration

Once a labor exporter, Turkey has become a transit and destination country, with potential EU accession negotiations forcing an overhaul of immigration and asylum policies.

Undocumented Immigration Haunts Italy's Ruling Coalition

Italy's bid to tighten unauthorized immigration controls in 2003 found little EU support and exposed rifts within Prime Minister Silvio Berlusconi 's ruling coalition.

Unauthorized Immigration to the United States

An estimated 9 million unauthorized immigrants lived in the United States in 2003, a population growing by about 350,000 annually between 1990 and 1999.

Does 'Smarter' Lead to Safer? An Assessment of the Border Accords with Canada and Mexico

Post-9/11 U.S. Smart Border accords with Canada and Mexico advanced bilateral security cooperation while keeping trade flowing, but gaps in infrastructure and strategy remained.