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.

Hispanic Dec. 13, 2007

The Immigration Debate: Controversy Heats Up, Hispanics Feel a Chill

The 2007 National Survey of Latinos finds that Hispanics in the U.S. are feeling a range of negative effects from increased public attention and stepped up enforcement measures.

Pew Research Center Nov. 29, 2007

Immigration Takes Center Stage at GOP YouTube Debate

In a format the public says it prefers — “regular people,” not journalists, posing the questions — immigration emerged as the hot-button issue. Were the candidates’ answers in sync with GOP voters’ opinions?

Pew Research Center Oct. 18, 2007

State-level Republican Candidates Stress Immigration

Candidates in several states are capitalizing on voter anger over illegal immigration after Congress failed for the second year in a row to pass major immigration reforms.

U.S. Politics Apr. 12, 2007

The Immigration Divide

With his renewed push for a comprehensive immigration bill, President Bush is advancing a potentially powerful political wedge issue, but one with an unlikely twist: Immigration fractures the president’s own party at least as much as it divides the opposition.

Pew Research Center Jan. 8, 2007

Are You a Citizen? Prove It

Worries about voter fraud, terrorism and illegal immigration are driving a surge in stiff new identification requirements. To weed out those who aren’t citizens, all Americans increasingly need a paper trail to qualify for some of the perks of citizenship — from driver’s licenses to Medicaid help.