E.g., 04/23/2024
E.g., 04/23/2024
Border Security

Border Security

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In an era when countries are increasingly exposed to the opportunities and risks associated with the rising global movement of people, policymakers are rethinking approaches to border controls and border management. These policies and programs run the gamut—from facilitating legitimate mobility of people and trade to thwarting unauthorized movements, the latter a significant preoccupation in the post-9/11 era and as publics have become ever less accepting of unauthorized immigration. The research offered here examines the management of borders, enforcement policies and initiatives, and border security technologies.

Recent Activity

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Reports
September 2018
By  Doris Meissner, Faye Hipsman and T. Alexander Aleinikoff
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Reports
July 2018
By  Sarah Pierce, Jessica Bolter and Andrew Selee
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Policy Briefs
July 2018
By  Kate Hooper and Kathleen Newland
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Reports
June 2018
By  Elizabeth Collett and Camille Le Coz
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Reports
January 2018
By  Sarah Pierce, Jessica Bolter and Andrew Selee
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Policy Briefs
December 2017
By  Sarah Pierce and Andrew Selee

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U.S. immigration officials walk by a courthouse in Seattle.

New Biden administration guidelines encourage immigration prosecutors to support dismissing many low-priority deportation cases and focus on criminals, threats to national security, and other priorities. This move could have a major impact on clearing backlogs in the overstretched U.S. immigration court system, resulting in quicker determinations in removal and asylum cases, where wait times can presently stretch for years.

A woman in Italy is vaccinated before travel in 1951.

Requirements that international travelers and migrants prove vaccination against certain diseases are about as old as vaccines themselves. In some cases, vaccine certificates predated the existence of government-issued passports. This article explores the history of these requirements, which began with smallpox and have since been applied for diseases including cholera, polio, yellow fever, and, recently, COVID-19.

U.S. Border Patrol agents prepare to transport unauthorized migrants to Mexico under Title 42.

The United States’ controversial Title 42 migrant expulsions policy will come to an end in May 2022, after more than 1.7 million expulsions over two years. The COVID-19-era public-health restriction ushered in an unprecedented period of mass expulsions, including of would-be asylum seekers, at the U.S.-Mexico border. Unwinding the policy will be complicated amid predictions of a significant increase in unauthorized migration.

An image of an immigration boarding line.

Need information about U.S. immigration trends or the makeup of the country's immigrant population? This useful, stats-rich article answers the most common questions about the size, shape, and changing nature of the U.S. foreign-born population. It also offers data on immigration enforcement actions, backlogs, and other elements of the U.S. immigration system.

A construction crew works on a wall the U.S.-Mexico border.

The number of border walls globally has multiplied at a rapid clip, from fewer than five at the end of World War II to more than six dozen now, with more under construction. Most of the world's border fortifications have been built since the turn of the millennium, and are intended to accomplish a range of functions. This article charts the remarkable growth and normalization of border walls globally.

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MovingBeyondPandemicMattHerbert
Expert Q&A, Audio
October 21, 2020

As COVID-19 chilled global mobility, harmed economies, and sparked border closures and travel bans around the world, the pandemic has had an effect on the shadow migration world.

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Expert Q&A, Audio
October 6, 2020

Austria’s Vienna airport was an early adopter for in-airport COVID-19 tests, with results turned around within a few hours, sparing those with medical certificates from a mandatory 14-day quarantine. Can this serve as a model for restarting business travel and tourism? In this episode of our Moving Beyond Pandemic podcast, we talk to Vienna airport official Peter Kleemann to learn more.

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Expert Q&A, Audio
September 30, 2020

Australia has worked to develop a “biosecure” border, using hard travel lockdowns, internal borders, and quarantine to stem spread of the COVID-19 virus. Is it working? In this episode of our Moving Beyond Pandemic podcast, host Meghan Benton talks to Brendan Dowling of the Australian Department of Home Affairs.

Video
September 21, 2020

This year’s Immigration Law and Policy Conference examines the immigration policy agenda under the Trump administration, including changes in the asylum system; the vast societal upheaval brought on by COVID-19 and the rising racial justice movement; what the future of U.S. immigration may look like; and many other topics related to U.S. immigration policy.

Video, Audio
June 8, 2020

Amid rising Central American migration to the United States, the U.S. and Mexican governments in June 2019 signed a joint declaration pledging to work together to manage and reduce irregular migration. At the agreement’s one-year anniversary, MPI researchers engaged in discussion with former U.S. and Mexican Ambassadors and a veteran journalist about the changes sparked. 

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Recent Activity

Commentaries
May 2022

Many countries are reopening for international travel and migration after the shutdown forced by the pandemic. Yet there is still no consensus on whether and how to use travel measures to prevent the spread of future variants of COVID-19 or respond to the next public health crisis. This commentary lays out four guiding principles for building an inclusive and effective global mobility system.

Articles

The population of sub-Saharan African immigrants in the United States is relatively small, but it has grown substantially over the last four decades and is likely to continue to increase. This group of 2.1 million people is highly diverse, including individuals with a range of ethnic, linguistic, and other backgrounds, as this article explains.

Reports
May 2022

Despite high hopes that international movement would be revived in 2021 after the deep chill in 2020 with designation of a global pandemic, cross-border mobility remained limited as migrants and travelers faced complex rules, high costs, and uncertainty as new COVID-19 variants emerged. This report assesses global mobility in 2021, including changing use of travel restrictions, their impacts on mobile populations, and efforts to safely restart migration and travel.

Articles

New Biden administration guidelines encourage immigration prosecutors to support dismissing many low-priority deportation cases and focus on criminals, threats to national security, and other priorities. This move could have a major impact on clearing backlogs in the overstretched U.S. immigration court system, resulting in quicker determinations in removal and asylum cases, where wait times can presently stretch for years.

Commentaries
April 2022

The United Kingdom’s controversial deal with Rwanda to relocate certain asylum seekers there—not for offshore processing for possible settlement in the United Kingdom but as a permanent destination—will have far-reaching implications, possibly destabilizing the norms and architecture of the post-World War II protection system, this commentary argues.

Reports
April 2022

Digital health credentials that verify a person’s COVID-19 vaccination, testing, or recovery status are a central part of efforts to restart international travel and migration. This report explores these credentials’ use to date and persistent challenges, including those related to international coordination and technical compatibility between systems. It also recommends strategies to more fully leverage their potential and make them more inclusive.

Commentaries
April 2022

With migration from Central America increasing, the region from Canada to Panama faces an opportunity to build an effective regional approach to migration by focusing on several areas that are ripe for significant policy innovation. This commentary sketches a vision, offering a road map to more detailed research that outlines strategies for cooperation on legal pathways, humanitarian protection, migration management, and sustainable development.

Articles

Requirements that international travelers and migrants prove vaccination against certain diseases are about as old as vaccines themselves. In some cases, vaccine certificates predated the existence of government-issued passports. This article explores the history of these requirements, which began with smallpox and have since been applied for diseases including cholera, polio, yellow fever, and, recently, COVID-19.

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