The Department of Homeland Security manages America's border and immigration enforcement

Immigration and Customs Enforcement handles immigration enforcement within the interior of the US

ICE operates inside the United States, enforcing immigration laws through investigations, arrests, detention, and deportation of individuals residing in the country illegally. This page provides an overview of the agency's mission, structure, and internal enforcement operations.

ICE was created in the aftermath of the 9/11 terrorist attacks

Created by the Homeland Security Act of 2002 following 9/11, ICE enforces federal immigration, customs, and trade laws under DHS. With over 20,000 staff across 400 global offices and an $8B budget, it focuses on detention, deportation, and cross-border criminal investigations.

The 2025 budget bill significantly increased ICE's budget and role in federal law enforcement

The 2025 'Big Beautiful Bill' allocated $170B to immigration and border enforcement for use through 2029. ICE's nearly $100B share includes substantial increases in detention capacity and operational scope. The increased funding will make ICE the most heavily funded federal law enforcement agency.

US Customs and Border Protection traditionally operates at ports of entry and along US borders

CBP manages security at official border crossings and patrols areas between ports of entry to prevent unauthorized crossings. View details of the agency's mission, organizational structure, and approach to managing the United States' physical borders.

The Federal Emergency Management Agency leads the US response to disasters

Established in 1979, FEMA coordinates the government's response to hurricanes, wildfires, floods, and other disasters, providing funding, logistical support, and recovery assistance. In FY 2024, the agency spent $35.1B, nearly 40% of the Department of Homeland Security's total budget.

The Department of Justice is the nation's chief law enforcement and legal agency

Established in 1870, the US Department of Justice enforces federal law, safeguards civil rights, and represents the United States in court—serving as the central authority for federal prosecutions and legal advice across all executive agencies.

See how the executive branch of the US government works

The executive branch enforces federal laws and is led by the president, who serves as head of state, commander in chief, and chief diplomat. Supported by the vice president, Cabinet, and around 4 million federal employees, it carries out laws through 15 departments and dozens of agencies.

DACA provides temporary protection for undocumented youth brought to America as children

Created by executive order during the Obama administration, the Deferred Action for Childhood Arrivals policy provides temporary deportation protection and work authorization for undocumented individuals brought to the US as children. Explore the history and ongoing political debates surrounding DACA and citizenship pathways.

The Social Security Administration (SSA) accounted for 22.4% of all federal spending in 2024

The SSA is an independent executive branch agency that is primarily responsible for administering Social Security benefits. In fiscal year 2024, The SSA, ranking second among federal agencies in terms of total spending, behind only the Department of Health and Human Services.

Health and population surveys from 90 countries

The Demographic and Health Surveys (DHS) Program collects, analyzes, and disseminates data on population, health, HIV, and nutrition. The site compiles data through more than 400 surveys in over 90 countries around the world. Explore demographic...

Opposing policies over immigration and sanctuary cities define the contemporary debate over federalism

Disputes between the federal government, Republican-controlled states, and Democratic-controlled cities over immigration enforcement and sanctuary policies have become a central flash point in modern federalism. These conflicts will shape the future of state autonomy, federal authority, and the enforcement of national policy across jurisdictions.

Track the changes in US immigration law throughout history

This interactive timeline tracks the development of US immigration law, overlaid with time-series data on percentages of the foreign-born population. Explore how each major policy development correlated with immigration levels, revealing the relationship between legislation and demographic change.

Federal government supports—but doesn't run—K-12 schools

The Department of Education contributes about 8% of K-12 funding and administers targeted grants, civil‑rights enforcement, research, and data collection. Crucially, it is legally prohibited from directing curriculum, personnel decisions, or instructional content, leaving that control to states and districts.

How America's cocaine habit fueled its migrant crisis

The United States has been facing a migration crisis along its southern border. Thousands of people have been fleeing their homes in Central America, traveling north through Mexico, and claiming asylum in the USA. Much of this crisis can be traced...

Employers must apply for H-1B visas on behalf of foreign workers

To hire an H-1B worker, US employers first file with the Department of Labor, then petition the US Citizenship and Immigration Services. They must attest that they won't replace American workers, and that they will implement stricter rules for firms that rely heavily on H-1B visas.

Learn about the bodies that govern the US commercial airline industry, such as the FAA

The Federal Aviation Administration (FAA) regulates US air travel, monitoring both safety and advancement. But despite deregulation in the 1970s, the industry has other governing bodies, too, including the US Department of Transportation and the TSA.

40% of Americans have ancestors who immigrated via Ellis Island

For over 60 years, Ellis Island was the gateway to America, processing millions of immigrants seeking a new life. While many passed through with ease, others faced rigorous medical exams, legal scrutiny, and even deportation. Learn how this small island shaped generations of American families.

A primer on USAID under the Trump Administration

The Congressional Research Service is a nonpartisan group dedicated solely to responding to questions and providing deeply researched explanations to members of Congress and their staff. The overview lays out the establishment of the US Agency for International Development in 1961, legal restrictions on its elimination, and options to restructure or fold USAID into other departments.

The USPS spent $3.97B in 2024, accounting for .058% of the federal budget.

An organizational breakdown of the National Science Foundation's directorates

Each is responsible for supporting a different discipline within science, engineering, and education, such as the Directorate for Biological Sciences, the Directorate for Engineering, and the Directorate for STEM Education. Formed in 2022, the Directorate for Technology, Innovation, and Partnerships is the NSF's first new directorate in 30 years and is focused on growing industry and an equitable STEM workforce.

Explore the extensive security in and around the White House

The White House is one of the most secure buildings in the world. Protected by the Secret Service, it features armed patrols, rooftop snipers, barriers, and sensors—layered defenses designed to deter intrusion.

Not all public lands are part of the National Park System

The entire National Park System is located on public lands. There are four different land management agencies in the United States, including the National Park Service.

How the US built the Interstate Highway system

As late as World War II, it took a well-prepared motorist roughly 10 days to cross America from coast to coast in a car. That all changed when the nation undertook its biggest public infrastructure project in 1956, the National Interstate and Defense Highways Act, initiating a 36-year, $114B mission to lay 41,000 miles of roads across America. Watch a smart overview here.

The Office of Chemical Safety and Pollution Prevention regulates toxic substances

This office evaluates and manages risks from industrial chemicals and pesticides. It reviews new chemicals before they enter the market, restricts hazardous substances, and promotes safer alternatives to protect human health and the environment.

The national debt of the US has been trending upward for over a century

The national debt of the US fluctuates. A federally managed database is updated daily and shows how the debt constantly changes over a 24-hour period. It’s broken down by what the government owes individual investors (debt held by the public) and what’s due to one sector of the government by another (intragovernmental holdings).

Smart cities support interdepartmental goals by facilitating shared infrastructure

Instead of working in isolation, municipal departments can share data, such as lighting and telecom needs, seamlessly and collaborate to solve larger-scale problems together. Integrating public feedback systems can further improve city services and sustainability.

The United States is one of only around two dozen countries with a fully federal system of government, in which power is divided between national and state governments.

The American Society of Civil Engineers' infrastructure report card gave the US a C in 2025, its highest grade since the project launched in 1998.

The United States has had a tumultuous relationship with Cuba since its 1959 revolution, highlighted by a nuclear crisis and a decades-long trade embargo.

Explore the known asteroids, comets, and spacecraft involved in asteroid studies within our solar system with 'Eyes on Asteroids,' a 3D visualization from NASA.

Hedge funds, the private investment firms that trade a wide swath of financial assets, make money by imposing steep fees on investors and from the fund's investment performance.

US consumers collectively owe more than $1T to credit card companies—almost as much as they owe in auto loans.

Experimental hantavirus vaccines and therapies, still under development, have long been funded by the US military.

A 2019 Facebook event called on attendees to "Storm Area 51, They Can't Stop All of Us," resulting in countless memes, the creation of a music festival, and eventually the arrests of those who did try to approach the area.

Iran's Revolutionary Guard Corps is independent of Iran's regular army and is one of the most powerful and influential military-political organizations in the Middle East.

Before the current East Wing ballroom project, only two White House renovations in the past 100 years cost more than $10M.

Abraham Lincoln was almost assassinated weeks before his inauguration as he traveled from Illinois to DC through Baltimore in 1861; it took two independent claims for Lincoln to be convinced the threat was real

Watch the cumbersome, but necessary, precautions healthcare workers must take to care for and protect themselves while caring for Ebola patients.

The 19th-century painters of the Hudson River School were among the first American romantics, with portraits that displayed the natural beauty of the young country.

Fireworks-related ER visits are on the rise—in 2024, they increased by 52% as compared to the prior year.

Explore an interactive map of battles from the American Revolution, along with detailed summaries of each engagement

Researchers believe the brain consolidates memories, processes emotions, and plans for the future during dream states

Gerrymandering works through two techniques: cracking opposing voters across districts to dilute their power, and packing them into a few to waste their votes in lopsided majorities.

Power lines are dotted with large, brightly colored balls to improve the visibility of these thin wires to helicopters and small planes and help prevent potential crashes.

The Great Salt Lake's distinct dual coloration results from high-salinity organisms that only live in the northern portion and produce a purple protein.

The American cockroach is actually from Africa, an apparent hitchhiker aboard ships carrying enslaved people, with evidence suggesting the bug may have arrived in the New World as early as the 1600s.

20,000 letters to the advice columnist 'Dear Abby' provide insight into prevailing sex, religion, and LGBTQ fears, anxieties, and concerns from the 1950s onward.

Take a 3D tour of the Hajj, Islam's annual pilgrimage to Mecca, undertaken by over 1.5 million Muslims.

Domino's Pizza's 30-minute delivery guarantee was responsible for the chain's 1980s surge, but it was discontinued after the company was found liable for delivery driver accidents.

While El Niño moves warm Pacific Ocean waters east along the equator, La Niña moves them west, shifting where rainfall will become more common for months.