E.g., 12/04/2020
E.g., 12/04/2020

Migration Information Source

Residents are affected by massive flooding in Thailand in 2011.
Cpl. Robert J. Maurer/U.S. Marine Corps

Migration can help build resilience against the encroaching effects of climate change. Instead of being passive victims of environmental degradation, individuals sometimes move to gain money, knowledge, and skills that can fortify their household of origin. Migrant workers from Thailand demonstrate how and under what conditions this process works.

President Donald Trump speaks at an event in Arizona.
Gage Skidmore

Despite a widespread perception that the Trump administration has drastically slashed legal immigration to the United States, a review of the data shows that temporary and permanent admissions during the period mostly followed previous trends—at least until the COVID-19 pandemic hit. This article examines trends in temporary, permanent, and humanitarian admissions during the administration, and the related policies that could take a more significant bite ahead if left unchanged.

A farmer in Tanzania tends to crops.
B. Bannon/UNHCR

Climate-induced migration can lead to tensions and violence between host communities and new arrivals. This conflict can flare up at various levels, including among rural farmers and herders in relatively peaceful countries such as Tanzania.

A soccer fan displays a mix of regalia from the United States and Mexico at the 2010 FIFA World Cup.
State Department

The nearly 11 million Mexican immigrants in the United States represent almost one-quarter of the country’s entire immigrant population, and as such are the largest foreign-born group. But their numbers have been declining, shrinking by 7 percent between 2010 and 2019. Among recently arrived immigrants, those from China and India now outpace Mexicans for the first time.

Federal immigration officers make an arrest during an operation in Virginia.
U.S. Immigration and Customs Enforcement

Before entering office, President Donald Trump promised to deport millions of unauthorized immigrants. Yet despite his general successes in creating a more restrictive and punitive immigration system, this goal has eluded his administration. So-called “sanctuary” policies implemented by state and local governments to limit their cooperation with U.S. Immigration and Customs Enforcement have been a key reason why arrests and removals have not reached earlier peaks.

A family in Pakistan walks through flooded streets
Asian Development Bank

Climate change is affecting human movement now, causing internal displacement and international migration, and will do so in the future. But the impact is often indirect, and rarely is the process as straightforward as one might think. This article provides an overview of research on how climatic hazards drive and affect migration, reviewing which types of people might migrate and under what conditions.

Recent Articles

Boats along a river in the Darien Gap, Panama

Growing numbers of African and Asian migrants are moving through Latin America, many hoping to reach the United States or Canada after expensive, arduous, and often dangerous journeys that can take months or even years. As more extracontinental migrants transit through South and Central America, Colombia, Panama, and Costa Rica have developed the most comprehensive policies to manage these flows, sometimes working in coordination with the U.S. government.

Asylum seekers cross into Canada

Nearly 50,000 asylum seekers have entered Canada irregularly via land crossing from the United States since spring 2017—contributing to a doubling in the overall number of asylum requests seen in 2016. Based on interviews with asylum claimants, this article analyzes their motivations for making the journey and the political implications of rising irregular migration to Canada.

Hungarian Prime Minister Viktor Orban

The recent rise in xenophobia in Hungary stands in marked contrast with the country's rich migration history. After 390,000 migrants and asylum seekers arrived in 2015, the government of Viktor Orbán issued policies to significantly limit migration and enacted a law criminalizing humanitarian assistance to migrants. This country profile examines Hungary’s migration past and present, tracing the country’s multicultural heritage to the current wave of anti-immigrant sentiment.

Outside of the Justice Department building

With a backlog of more than 1 million removal cases, the U.S. immigration court system is in crisis. Pressure from external forces, internal challenges, and lagging resources for the courts at a time of massive increases in spending on immigration enforcement have contributed to the backlog. This article explores how the system got to the breaking point, and what opportunities for reform exist.

An apprehended migrant sits in a truck with his hands in his face

Buoyed by initial successes challenging Trump administration immigration actions such as the travel ban in federal court, many critics expected the judiciary to act as a brake on major changes to the immigration system. Yet the Supreme Court has repeatedly shown a willingness to affirm the executive branch's immigration policies, most recently permitting what is arguably the most significant asylum policy change in four decades to proceed.

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Venezuelan migrants in Ecuador

The deepening of Venezuela's social, economic, and political implosion has resulted in the fastest movement of people across borders in Latin American history. Neighboring countries have responded with a patchwork of policy measures, though the scale and growing diversity of Venezuelan arrivals have challenged regional actors, as this article explores.

Muhammad Ashiq

The social and economic effects of migration are widely known and discussed. But do people become happier overall after moving abroad? Using the latest research, this article examines happiness outcomes of migration on migrants as well as the native born in immigrant-receiving countries.

Rising sea levels threaten Pacific Islands

While media and academic discussions of "climate refugees" paint a picture of mass displacement of millions, in reality many communities vulnerable to climate change may choose to stay as a result of strong cultural, historical, and spiritual attachments to place. This article explores this "voluntary immobility" and its implications in the Pacific Islands.

A woman walks alongside a train in Mexico.

In recent years, women from Central America have begun to make up a greater share of migrant apprehensions in Mexico and at the U.S. Southwest border. Systemic insecurity, poverty, and corruption are among the factors driving women and others to flee. This article explores the increase in female migration from Central America and the challenges these women face on their journey.

Over the past decade, migration has emerged as one of the most pressing issues facing governments around the world. Nearing the end of his tenure as Director General of the International Organization for Migration (IOM), Ambassador William Lacy Swing sat down with MPI Senior Fellow Kathleen Newland to reflect on his ten years leading IOM, as well as the international community's role on migration going forward.

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The Brazilian immigrant population in the United States doubled during the 1980s and almost tripled in the 1990s, but stabilized following the Great Recession. While this population has long included a significant share of unauthorized immigrants, Brazilians are increasingly coming to the United States through family, employment, and study channels. Learn more about Brazilian immigrants with this Spotlight.

Now comprising the sixth largest foreign-born group in the country, the Vietnamese immigrant population in the United States has grown significantly since the end of the Vietnam War. Learn more about this population with the latest data in this Spotlight article.

The number of international students enrolled in U.S. colleges and universities has risen steadily since the mid-20th century. Today, the United States represents the top destination for international students worldwide. Learn more about where these students come from, which universities they attend, and the subjects they study in this Spotlight article.

Get all the latest and historical facts and figures on immigrants and immigration in the United States in this handy resource. With immigration often surfacing in public and political debates, learn the answers to such questions as: How do current immigration flows compare to earlier ones? How many unauthorized immigrants live in the United States? How many refugees are admitted annually? And get answers to many more questions.

Mexican immigration to the United States has slowed in recent years, and since the Great Recession more Mexican immigrants have returned to Mexico than have migrated to the United States. Mexicans, however, remain the largest origin group in the country, accounting for 28 percent of all immigrants. See how Mexican immigrants compare to the overall foreign- and U.S.-born populations on key indicators with this Spotlight article.

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Recent immigration to the United Kingdom is larger and more diverse than at any point in its history. This updated profile examines how the global recession is affecting migration flows, the latest immigration and asylum data, and overviews of new immigration and integration policies.

South Africa is struggling to define a post-apartheid migration policy that is responsive to its changing role in Africa, the relationship between migration and development, and the country's rampant xenophobia, seen most graphically in May 2008. Jonathan Crush of the Southern African Migration Project reports on the latest developments.

Economic, social, and political conditions have pushed North Koreans to illegally leave their country and migrate to South Korea, China, Russia, and elsewhere. MPI's Hiroyuki Tanaka examines humanitarian and economic migration flows from North Korea, and the situation of North Koreans living abroad.

Thousands of Salvadorans fled the country during its civil war in the 1980s, many of them to the United States. The government is focused on engaging its diaspora but also must deal with immigrants from neighboring countries and issues around human trafficking.

Macedonia avoided the interethnic conflict that ripped through the former Yugoslavia in the early 1990s. It was the only state to emerge with its independence (in 1991) and no loss of blood.

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Passed with minimal controversy and public debate, the 2016 spending bill included some of the most substantial immigration policy changes enacted by Congress in the last decade. The changes touched on aspects including temporary worker visas, visa security, and the immigration courts, and could signal a new strategy for legislative change to the immigration system.

The Fifth U.S. Circuit Court of Appeals ruled to maintain an injunction on President Obama's signature deferred action programs and the timing of the administration's Supreme Court appeal will prove critical amid the 2016 election campaign. This Policy Beat also explores a federal judge's decision not to block a Texas policy refusing to issue birth certificates to the U.S.-born children of unauthorized parents. Should the policy be upheld, it could open the door for further limitations on birthright citizenship.

Signed into law 50 years ago, the Immigration and Nationality Act of 1965 had several unintended consequences that have had a profound effect on the flow of immigrants to the United States and contributed to the transformation of the U.S. demographic profile. This Policy Beat explores the law's lasting impact and lessons for policymaking today.

Facing legal setbacks and political opposition, the Obama administration may be required to overhaul its policy of detaining families in immigration custody. Recent court decisions have undermined the government's justification of the policy as a deterrent to future illegal immigration and may result in the release of more than 1,400 unauthorized immigrant women and children.

The killing of a young woman in San Francisco by an unauthorized immigrant coincided with the Obama administration's rollout of the Priority Enforcement Program, a new vehicle for improving federal-local relations on immigration enforcement. The tragedy has rekindled debate over the role of "sanctuary" cities and propelled illegal immigration to the forefront of the 2016 presidential race.

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