Unauthorized Immigration

The nation’s largest annual demography conference, the Population Association of America meeting, featured new research on topics including couples who live in separate homes, children of multiracial couples, transgender Americans, immigration law enforcement and how climate change affects migration.

In 2015, more than 1.8 million people crossed the European Union’s borders illegally, up from 280,000 detections of illegal border crossings in 2014.

From 1965 to 2015, more than 16 million Mexicans migrated to the U.S. in one of the largest mass migrations in modern history. But Mexican migration to the U.S. has slowed in recent years. Today, Mexico also increasingly serves as a land bridge for Central American immigrants traveling to the U.S.

Out of 45 million U.S. arrivals by air and sea whose tourist or business visas expired in fiscal 2015, the agency estimates that about 416,500 people were still in the country this year.

The U.S. Supreme Court is expected in April to hear a lawsuit by Texas and 25 other states that seeks to block presidential executive actions offering deportation relief and work permits to unauthorized immigrants.

From Millennials in the workforce to religion in America, our most popular posts told important stories about trends shaping our world.

Between 2009 and 2014, about 140,000 more Mexican immigrants have returned to Mexico from the U.S. than have migrated here, citing family reunification as the main reason for leaving.

Survey Report As immigration emerges as a key issue in the presidential campaign, there is little common ground between Republicans and Democrats in views of several immigration policy proposals. But partisan disagreements are much more pronounced on some issues than others. Overall, the public continues to be divided over building a fence along the entire […]

Explore how immigration in the U.S. was shaped by laws and acts in this interactive timeline of U.S. immigration legislation since the 1790s.

The nation's foreign-born population has swelled from 10 million in 1965 to a record 45 million in 2015. By 2065, the U.S. will have a projected 78 million immigrants.