The United States Department of Justice (DOJ), also known as the Justice Department, is a federal executive department of the United States government responsible for the enforcement of the law and administration of justice in the United States of America, and is equivalent to the justice or interior ministries of other countries. The department was formed in 1870 during the Ulysses S. Grant administration, and administers several federal law enforcement agencies, including the Federal Bureau of Investigation (FBI), the United States Marshals Service (USMS), the Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF), and the Drug Enforcement Administration (DEA). The department is responsible for investigating instances of financial fraud, representing the United States government in legal matters (such as in cases before the Supreme Court), and running the federal prison system. The department is also responsible for reviewing the conduct of local law enforcement as directed by the Violent Crime Control and Law Enforcement Act of 1994.
The department is headed by the United States Attorney General, who is nominated by the President and confirmed by the Senate and is a member of the Cabinet. As of February 2019, the Attorney General is William Barr.