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

  • Blog

How Criminalizing Communities of Color Has Driven the Anti-Immigrant Narrative

January 11, 2018

In recent weeks, the Trump administration has ended the Deferred Action for Childhood Arrivals program, taken away Temporary Protected Status for Salvadorans in the United States, and staged raids...

  • Blog

Nativists Can’t Back Up Their Claims on Immigration and Crime

January 3, 2018

Social scientists have concluded that immigrants are far less likely than the native-born to commit serious criminal offenses or end up behind bars. More than one hundred years of research has...

  • Blog

Three Year Anniversary of Family Detention Center Is Sad Reminder of America’s Cruelest Immigration Policy Practice

December 20, 2017

December marks the three-year anniversary of the opening of the country’s largest family detention center for non-citizen mothers and their minor children located in Dilley, Texas. Referred to as...

  • Blog

‘Sanctuary’ Policies Do Not Foster Crime, Research Shows

December 18, 2017

During its first ten months in office, the Trump administration has made aggressive immigration enforcement a priority. One of the areas in which this approach was crystalized was around so-called...

  • Blog

Where Doug Jones Stands on Immigration Policy

December 13, 2017

Doug Jones, a former Democratic prosecutor once considered a longshot in Republican-majority Alabama, narrowly won the state’s Senate race Tuesday evening in what may ultimately prove to be a...

  • Blog

“Listening” Over Turkey 2017

November 21, 2017

Each year at Thanksgiving, Immigration Impact publishes a post about how to “talk turkey” on immigration. We’ve done it for several years to provide our readers with tips on how to talk about...

  • Blog

The Military’s Strategic and Recruitment Goals Fail When Immigrants Can’t Serve

November 9, 2017

The United States Armed Forces has long valued the contributions of immigrants—from the War of 1812 to the ongoing conflicts in the Middle East, U.S.-born and immigrant soldiers have fought...

  • Blog

How Anti-Immigrant Rhetoric Turns Immigrants Into Criminals

November 6, 2017

It has been well established for decades that the vast majority of immigrants are not criminals by any stretch of the imagination. Yet, immigrants who have committed no violent offense are often...

  • Blog

How the Diversity Visa Lottery Honors American Values

November 1, 2017

Americans value diversity and family. That is why our immigration system generally reflects those values. The U.S. diversity visa lottery, which was enshrined into law in 1990, was created to...

  • Blog

Immigrants Make up a Smaller Share of the U.S. Population Than They Did 100 Years Ago

October 23, 2017

The United States has been created by successive waves of immigration over the course of centuries. Each wave of immigrants from different parts of the world has helped to build the U.S. economy...

  • Blog

How States Expand Access to Driver’s Licenses Ahead of Real ID Deadline

October 25, 2019

Beginning in December, all New Yorkers will be able to apply for a driver’s license—regardless of immigration status. The Driver’s License Access and Privacy Act, or “Green Light” bill, passed the...

  • Blog

The Trump Administration Wants to Return to a Pre-Civil Rights Immigration System

October 21, 2019

The ideology of President Trump is about more than limiting how many immigrants enter the United States each year; it’s about turning back the clock on U.S. social history. A recent analysis by...

  • Blog

In Historic Ruling, Thousands of Immigrants Waiting for Their Immigration Records Can Now Challenge Agency Delay

October 17, 2019

A federal court in San Francisco certified two nationwide classes of immigrants and attorneys challenging extreme agency delays in producing immigration case files. Plaintiffs allege that U.S....

  • Blog

How Trump’s New Healthcare Ban Threatens the Legal Immigration System

October 9, 2019

President Trump invoked the same legal authority used for the Travel Ban to impose a sweeping new ban on legal immigration last week. Under the new ban, which analysis suggests could block as much...

  • Practice Advisories

Agency Delay Litigation: Opposing a Motion to Dismiss

Publication Date: 
October 4, 2019
This practice advisory summarizes the most common grounds raised by the government in motions to dismiss federal court agency adjudication delay lawsuits and outlines arguments that can be made in response.
  • Blog

Deporting Immigrants Does Not Lower Crime, According to Study

September 25, 2019

The mass deportation of immigrants from the United States under the Secure Communities program has had no appreciable impact on local crime rates. Why? Because most of the immigrants being...

  • Blog

The National Park Service Warns Border Wall Construction Could Destroy 22 Archaeological Sites 

September 23, 2019

In the Trump administration’s rush to build a wall along the U.S.-Mexico border, 22 archaeological sites could be damaged or entirely destroyed. This warning comes from an internal National Park...

  • Blog

Trump Administration Considers Lowering the Refugee Cap to Zero

September 13, 2019

The Trump administration is considering decreasing the maximum number of refugees accepted into the United States to 10,000 and as possibly low as zero, administration officials confirmed last...

  • Fact Sheet

The High Cost and Diminishing Returns of a Border Wall

Publication Date: 
September 6, 2019
The fact is that building a fortified and impenetrable wall between the United States and Mexico is unnecessary, complicated, ineffective, expensive, and would create a host of additional problems.
  • Blog

The Opportunity Immigration Presents to the Changing US Economy

September 5, 2019

The U.S. economy is changing—and immigration can play a major role in how it looks in the future. But how immigration shapes the future of the U.S. economy and its workforce is dependent on a...

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