U.S. Department of Justice

Officially coming into existence on July 1, 1870, the Department of Justice was empowered to handle all criminal prosecutions and civil suits in which the United States had an interest. To assist the Attorney General, the 1870 Act also created the Office of the Solicitor General, who represents the interests of the United States before the U.S. Supreme Court.

The 1870 Act remains the foundation for the Department's authority, but the structure of the Department of Justice has changed over the years, with the addition of the offices of Deputy Attorney General, Associate Attorney General, and the formation of various components, offices, boards and divisions. From its beginning as a one-man, part-time position, the Department of Justice has evolved into the world's largest law office and the chief enforcer of federal laws.