The U.S. is a nation of immigrants. But unauthorized immigrants have become a source of political debate, and Congress and President Obama disagree over the best course of action to address issues such as deportations, legal status, education and benefits. For years, the Pew Research Center has estimated the size of the unauthorized immigrant population and surveyed the U.S. public about immigration.

U.S. PoliticsFebruary 24, 2017

Most Americans continue to oppose U.S. border wall, doubt Mexico would pay for it

More Americans continue to oppose than favor building a wall along the entire U.S. border with Mexico, and 70% think the U.S. would ultimately pay for it.

HispanicFebruary 9, 2017

20 metro areas are home to six-in-ten unauthorized immigrants in U.S.

A new analysis shows that the nation’s unauthorized immigrant population is highly concentrated, more so than the U.S. population overall.

U.S. PoliticsJanuary 10, 2017

How America Changed During Barack Obama’s Presidency

Pew Research Center President Michael Dimock examines the changes – some profound, some subtle – that the U.S. experienced during Barack Obama’s presidency.

Fact TankJanuary 6, 2017

Less than half the public views border wall as an important goal for U.S. immigration policy

Only 39% of Americans view building a wall along the U.S.-Mexican border as a very or somewhat important goal.

Fact TankJanuary 5, 2017

Unauthorized immigrants covered by DACA face uncertain future

The many unauthorized immigrants covered by the Deferred Action for Childhood Arrivals program now must wait and see what happens under President-elect Donald Trump.

Fact TankDecember 15, 2016

International migration: Key findings from the U.S., Europe and the world

Millions of people around the world have migrated to the U.S. and other countries in recent years – some voluntarily, others to flee political turmoil, persecution or war.

Fact TankNovember 29, 2016

Trump voters want to build the wall, but are more divided on other immigration questions

Though many Trump supporters say illegal immigration is a serious problem in the U.S. and want to build the wall, they are more divided on other questions.

Fact TankNovember 17, 2016

Children of unauthorized immigrants represent rising share of K-12 students

About 3.9 million kindergarten through 12th-grade students in U.S. public and private schools in 2014 were children of unauthorized immigrants.

HispanicNovember 3, 2016

Estimated unauthorized immigrant population, by state, 2014

California has by far the largest number of unauthorized immigrants, about 2.3 million in 2014.

HispanicNovember 3, 2016

Unauthorized immigrant population trends for states, birth countries and regions

Explore U.S. unauthorized immigrant population trends for states of residence, as well as for international regions and largest countries of birth, based on Pew Research Center estimates.