Immigration 101

The U.S. immigration system is complex and can be difficult to understand. These resources provide key data points, historical information, and background on hot topics in immigration. Learn the basics about immigration.

Recent Features

Why Don’t Immigrants Apply for Citizenship?

There is no line available for undocumented immigrants and the “regular channels” do not include them.

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Fact Sheet
Temporary Protected Status: An Overview

This fact sheet provides an overview of how Temporary Protected Status designations are made, what benefits TPS confers, and how TPS beneficiaries apply for and regularly renew their status.

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How the United States Immigration System Works

U.S. immigration law is very complex. Here's basic information about how the U.S. legal immigration system is designed.

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All Immigration 101 Content

  • Special Report

Stepping Up: The Impact of the Newest Immigrant, Asian, and Latino Voters

Publication Date: 
September 3, 2013
This analysis of immigration trends and the demographic composition of U.S. House districts shows that numerous congressional districts have emerging electorates who have many reasons to care deeply...
  • Special Report

Tackling the Toughest Questions on Immigration Reform

Publication Date: 
July 29, 2013
Despite significant public support for immigration reform among members of the public in both parties, many of the most basic facts about immigrants and immigration remain misunderstood.
  • Special Report

Crafting a Successful Legalization Program: Lessons From the Past

Publication Date: 
June 19, 2013
One of the themes that emerged from the Senate Judiciary Committee mark up of the 2013 Senate immigration bill was the necessity of avoiding the mistakes of the past. In the context of legalization...
  • Special Report

Passport Pages Tell Our Tale

Publication Date: 
April 29, 2013
Today in the United States, Lesbian, Gay, Bisexual, and Transgender (LGBT) Americans who fall in love with and marry foreign nationals are being asked to choose between country and spouse, country...
  • Fact Sheet

Legalize Who?: A Portrait of the 11 Million Unauthorized Immigrants in the United States

Publication Date: 
January 31, 2013
As the immigration debate heats up in Congress, the central question will be what to do about the 11 million...
  • Special Report

Back to the Future: The Impact of Legalization Then and Now

Publication Date: 
January 31, 2013
While there are many facets to an intelligent immigration reform package, one thing is clear: legalization for undocumented immigrants helps all of us. Most economists recognize that legalization...
  • Fact Sheet

Using the Systematic Alien Verification for Entitlements (SAVE) Program for Voter Eligibility Verification

Publication Date: 
August 2, 2012
The evidence of non-citizens voting is sparse and...
  • Fact Sheet

Chicken Little in the Voting Booth: The Non-Existent Problem of Non-Citizen Voter Fraud

Publication Date: 
July 13, 2012
A wave of restrictive voting laws is sweeping the nation. The Brennan Center for Justice at New York...
  • Fact Sheet

African Immigrants in America: A Demographic Overview

Publication Date: 
June 28, 2012
Immigrants from Africa constitute a highly diverse and rapidly growing group in the United States. As Census data demonstrate, the African foreign-born population doubled in size between 2000 and...
  • Fact Sheet

Latinos in America: A Demographic Overview

Publication Date: 
April 26, 2012
Latinos in the United States are a diverse and fast-growing group that is amassing considerable economic and political power. As data from the 2010 Census and other sources demonstrate, Latinos now...

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