The FBI is the largest agency within the Department of Justice

The Department of Justice spent $44B in 2024.

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.

The Bureau of Prisons manages 122 federal prisons and over 150,000 inmates

The Federal Bureau of Prisons, part of the DOJ, runs 122 facilities across the United States, holding over 150,000 inmates. It manages custody, security, rehabilitation, and reentry programs within the federal correctional system.

The DEA enforces federal drug laws under the Department of Justice

Established in 1973, the Drug Enforcement Administration directs federal efforts to fight illegal drug trafficking, oversee controlled substances, and dismantle large narcotics networks both within the United States and internationally.

The Department of Justice is led by the US attorney general

The attorney general acts as the nation's top law enforcement official—managing all Department of Justice activities, overseeing US attorneys, and advising the president and federal agencies on legal issues that influence policy and enforcement.

The FBI's most famous cases

From the D.B. Cooper plane hijacking to the kidnapping of Frank Sinatra Jr. to the details about the first FBI agent killed in the line of duty, this FBI archive overviews the agency's most famous cases. Cases are organized by investigative priorities, according to the agency. Clicking any of the linked investigations takes readers to detailed articles about the cases, some of which remain unsolved.

The Department of Justice was formally established in 1870

Passed by Congress in 1870, the Act to Establish the Department of Justice centralized federal legal work under the attorney general, bringing together US attorneys and marshals into a single department.

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.

Immigration courts are part of the DOJ, not the judicial branch

Unlike federal courts, immigration courts operate under the DOJ's Executive Office for Immigration Review—meaning immigration judges are DOJ employees, not independent judicial officers, and their decisions can be reviewed and overturned by the attorney general.

The US federal government employs roughly 3 million people

Tracking began in 1939, when the federal workforce consisted of about 1 million people. The total peaked in 1990 at 3.4 million, and hit a recent low in 2014 at 2.7 million.

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.

The FBI was thrilled with 'The Silence of the Lambs' and its portrayal of the agency

The film's ultimate purpose was to terrify, but the FBI made it clear that they appreciated the accurate, professional portrayals of its agents. "It never hurts to see the organization we all care about and know to be good well-depicted on the big screen," special agent Walter B. Stowe, Jr., wrote in a letter to director Jonathan Demme.

The early DOJ led the first major federal civil rights prosecutions

During Reconstruction, the newly formed Department of Justice prosecuted Ku Klux Klan violence in the South—securing over 1,000 indictments and more than 500 convictions by 1873 in defense of newly established civil rights protections.

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.

US marshals were the first federal law enforcement officers

Established in 1789, US marshals carried out court orders, served subpoenas, made arrests, and collected fines—serving as the federal government's main law enforcement agency across the states for nearly a century before the creation of the DOJ.

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.

Read a breakdown of the different financial and banking regulatory bodies in the US, including the SEC.

The Immigration and Customs Enforcement agency was created in the aftermath of the 9/11 terrorist attacks.

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

DHS serves as the umbrella agency managing immigration enforcement, border security, and related public safety responsibilities. Learn more about the department's budget, strategic initiatives, organizational history, and coordination of multiple agencies.

Police spending is one of the largest budget items for local governments

Local governments finance most of the costs for police in the US. Total state and local criminal justice spending—covering police, courts, and corrections—reaches hundreds of billions of dollars annually.

The Civil Rights Act expanded the Department of Justice's enforcement powers

The 1964 bill empowered the DOJ's Civil Rights Division to challenge segregation, protect voting rights, and prosecute discrimination, thereby expanding its role in defending civil rights.

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.

The solicitor general argues the federal government's cases before the Supreme Court

Sometimes called the "10th justice," the solicitor general is the DOJ official responsible for representing the United States before the Supreme Court—deciding which cases the government will appeal, filing briefs, and arguing on behalf of federal interests.

The vast majority of federal criminal cases never reach a jury.

In fiscal year 2022, nearly 90% of federal defendants pleaded guilty, and another 8% had their cases dismissed. This means just 2% went to trial at all, making a trial by jury a rare outcome in the modern federal court system.

Read the Federal Trade Commission's legal definition of a monopoly

The Federal Trade Commission and the US Department of Justice (DOJ) Antitrust Division are the regulatory agencies responsible for overseeing antitrust laws. Before deeming any company a monopoly or acknowledging monopolistic power in a market, the FTC conducts thorough research into market competition, price, and even other competitors' business practices.

The IRS—a division of the US Treasury Department that enforces the Internal Revenue Code, collects taxes, and enforces tax laws—has been a frequent victim of arson over the years.

Watch the DOJ attempt to reform a local police department in 2016

This report examines federal oversight of Newark's police department as the DOJ enforces reforms following its investigation into civil rights violations, highlighting the challenges of reforming local policing through federal intervention.

President Trump has changed decades-long norms for the DOJ during his second term

The Trump administration made changes to ethics oversight, instructed US attorneys to coordinate with the White House, dismissed cases, and overhauled the career hiring process in the Civil Rights division. The administration asserts these changes were justified and aimed to end what they claim as the weaponization of government.

Read about former FBI Director James Comey's time at Bridgewater Associates

Comey worked at Bridgewater Associates for three years before becoming the director of the FBI in 2013. Comey has said the company's tradition of "probing," or intense questioning, can be more intense than government hearings. During his time at Bridgewater, Comey led multiple investigations into employee conduct—particularly that of former executive Eileen Murray. (Some readers may experience a paywall.)

Explore the biographies and official portraits of every US attorney general since 1789.

The Federal Reserve is the most powerful financial institution in the US

The Fed controls the money supply, determines interest rates, and regulates the banking system. Established in 1913 after a volatile series of financial panics, the central bank has managed to retain its legitimacy despite broad critiques against its obscure and independent decision process.

The Voting Rights Act expanded the DOJ's power to enforce voting protections

The Voting Rights Act of 1965 expanded the Department of Justice's power to challenge discriminatory election laws, send federal examiners, and supervise voting changes in areas with histories of voter suppression—although some of these powers have been limited by court rulings since then.

The Judiciary Act of 1789 created the foundation of the federal justice system

Passed by the First Congress, the Judiciary Act of 1789 established the federal court system, the Office of the Attorney General, and the US Marshals Service—the first law concerning national law enforcement and legal administration.

As of 2022, about 40% of scientific research aimed at generating new knowledge has been funded by the federal government—a percentage that has decreased from a high of 72% in 1967.

Read more about how the IRS is organized

The Internal Revenue Service is led by a commissioner, who leads the IRS for a five-year term after being selected by the president of the United States. Under the commissioner, the IRS has multiple subdivisions that work on different tax groups, such as the Wage and Investment Division to handle individual wage earners.

Most US fire departments are staffed entirely by volunteers, though they tend to serve smaller communities

According to the Federal Emergency Management Agency's 2024 registry, 70% of US fire departments are all volunteer, while 9.5% are fully staffed with paid employees. Volunteer departments are mainly found in rural and suburban areas, whereas most urban Americans are served by career or mixed departments.

See a chart showing how much the US federal government pays in interest on its debt.

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.