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E.g., 06/04/2026
Migration Policy Institute - State & Local Enforcement

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Post date: Mon, 23 Feb 2026 10:27:37 -0500

The ramp-up of federal immigration enforcement during the second Trump term has prompted sharp responses from state and local governments, with some limiting cooperation with U.S. Immigration and Customs Enforcement (ICE), or barring agents' wearing of masks or the establishment of immigrant detention facilities. At the same time, some Republican-led jurisdictions have embraced policies to encourage cooperation with ICE. This article traces the rise of "sanctuary" policies and divergent trends.

Post date: Fri, 09 Jan 2026 13:52:07 -0500

U.S. immigration policy, practice, and enforcement changed dramatically over the first year of President Donald Trump's second term, touching most corners of the immigration system. The government has cracked down on unauthorized immigration in the U.S. interior and at the border, expanded scrutiny of immigrants of all legal statuses, and erected barriers for would-be arrivals. This article provides a sweeping overview of the changes that have taken place and assesses their impacts.

Post date: Mon, 22 Dec 2025 16:21:28 -0500

MPI analysts assess the immigration actions taken during President Trump's first year back in office, detail the legal state of play, and analyze the actual effects on the labor market, U.S. communities, and future immigration to the United States.

Post date: Fri, 14 Nov 2025 15:54:14 -0500

E-Verify has been heralded as a key way to control unauthorized immigration to the United States, but federal efforts to expand the system stalled. There has been movement at the state level over the past decade, though, and there are signs it may rise in prominence again. This article details the history and challenges of E-Verify, and its limited uptake.

Post date: Thu, 23 Oct 2025 16:58:04 -0400

The number of people in U.S. immigrant detention has grown sharply under President Donald Trump and will likely continue to rise in coming months. The rapid ramp-up has relied on an array of nontraditional facilities as well as private prisons, and has been accompanied by allegations of harsh treatment and rising deaths. This article traces the growth and evolution of the world's largest immigration detention system.

Post date: Wed, 13 Aug 2025 13:41:32 -0400

This conference will feature thoughtful policy and legal analysis and discussion of some of the most important immigration issues that have surfaced in the U.S. policy debate. 

Post date: Mon, 28 Jul 2025 12:14:28 -0400

U.S. immigration enforcement is undergoing a marked transformation, as state and local law enforcement authorities—once largely on the sidelines—have become central partners to the Trump administration. State and local participation is growing in size and scope, including the signing of hundreds of 287(g) deputization agreements, opening of Florida's Alligator Alcatraz, and Texas's multibillion-dollar Operation Lone Star.

Post date: Tue, 27 May 2025 16:22:19 -0400

In its bid to ramp up deportations, the Trump administration is granting ICE access to a swath of government databases that were previously off limits for immigration enforcement, including sensitive tax and Social Security records. This article details the growing digital arsenal of government and commercial databases that ICE can tap to identify and arrest removable noncitizens, and how this unprecedented data sharing has its roots in the post-9/11 era.

Post date: Wed, 26 Mar 2025 14:31:53 -0400

Top analysts assess the most consequential immigration actions taken during the first 100 days of President Trump's second term, detail the litigation picture, and analyze some of the early effects of policies on U.S. communities.

Post date: Fri, 21 Feb 2025 12:18:03 -0500

In making immigration enforcement its top priority, the Trump administration has bent a broad swath of the federal government to the mission of arresting, deporting, and barring the entry of noncitizens who lack legal status or have been convicted of crimes. The changes represent an unprecedented retooling and remaking of the vast U.S. deportation machinery, as this article details.

Post date: Mon, 03 Feb 2025 20:52:04 -0500

El control migratorio en los Estados Unidos se lleva a cabo en sus fronteras, así como en el interior del país. Esta guía informática 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 a través del sistema de justicia penal y las operaciones en lugares de trabajo y dentro de comunidades estadounidenses.

Post date: Thu, 30 Jan 2025 19:00:20 -0500

Immigration enforcement takes place both at U.S. borders and in the nation’s interior. This explainer answers common questions about how U.S. Immigration and Customs Enforcement works within the U.S. interior, identifying people for arrest, detention, and removal through the criminal justice pipeline as well as through operations at worksites and within U.S. communities.

Post date: Wed, 22 Jan 2025 10:22:27 -0500

Within hours of his second inauguration, President Donald Trump moved to dramatically reshape U.S. immigration enforcement and policy. The changes set the stage for mass deportations, all but foreclose access to asylum at the border, and seek to create “shock and awe” that will reverberate around the country. This article examines the early-day policies, possible impacts, and likely headwinds.

Post date: Fri, 27 Dec 2024 09:52:55 -0500

As the Biden administration draws to a close, this webinar examined the Biden record on border management, legal immigration, and refugee resettlement, among other aspects. Speakers assessed the Biden legacy and discussed findings from an analysis of the administration’s actions on immigration during its four years.

Post date: Mon, 09 Dec 2024 15:01:03 -0500

As the Biden administration draws to a close, this webinar examined the Biden record on border management, legal immigration, and refugee resettlement, among other aspects. Speakers assessed the Biden legacy and discussed findings from an analysis of the administration’s actions on immigration during its four years.

Post date: Wed, 04 Dec 2024 10:16:16 -0500

The Biden administration took significantly more executive actions on immigration than its predecessors, including during Donald Trump's first term, although it has been unable to escape criticism for its response to record irregular arrivals at the U.S.-Mexico border. The border overshadowed administration steps to modernize the legal immigration system and rebuild refugee resettlement, as this analysis of Biden's track record explains.

Post date: Wed, 02 Oct 2024 09:42:10 -0400

Do large-scale deportations lead to safer communities, better jobs, and less irregular migration? Research shows the answer is less clear than leading voices may suggest. This article provides an overview of research about the impacts of removals on destination and origin countries alike, focusing in particular on deportations from the United States to Latin America.

Post date: Thu, 25 Jul 2024 12:56:00 -0400

Hundreds of thousands of asylum seekers and other migrants have gone directly from the U.S.-Mexico border to New York, Chicago, Denver, and other interior cities, hastening what had previously been a much more gradual process. As arrivals have slowed, the situation has stabilized, and cities have managed to find a new normal. This article explains how cities coped initially and examines the longer-term challenges that remain.

Post date: Fri, 22 Mar 2024 11:30:50 -0400

The U.S. immigration enforcement system increasingly depends on other countries to help halt irregular movements through the Americas and accept the return of unauthorized migrants. Foreign governments play a crucial and yet underappreciated role in migration management, and can either aid or frustrate U.S. border-control aims, as this article explores.

Post date: Mon, 26 Feb 2024 14:44:00 -0500

Rising tensions between Texas and the federal government have sparked fears of a constitutional crisis after the state deployed its National Guard to prevent the U.S. Border Patrol from conducting operations in a city park in Eagle Pass, with Texas Governor Greg Abbott saying the “invasion” of migrants triggered the need for action. This article provides an overview of the standoff and the larger context of current and past state-federal tensions over immigration enforcement.