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    THOMAS P. O'BRIEN, UNITED STATES ATTORNEY

    Thomas P. OBrien, United States Attorney

    The United States Attorney's Office for the Central District of California (USAO) is responsible for representing the federal government in virtually all litigation involving the United States in the Central District of California. This includes criminal prosecutions for violations of federal law, civil lawsuits by and against the government, and actions to collect judgments and restitution on behalf of victims and taxpayers. The USAO is headed by United States Attorney Thomas P. O'Brien.

    The Central District of California (CDCA) is made up of the seven counties of Los Angeles, Orange, Riverside, San Bernardino, San Luis Obispo, Santa Barbara, and Ventura. Map of California - Click here for larger map.With a population of more than 18 million, it is by far the most populous federal judicial district, with almost twice the population of the next-largest district. The district extends from the Pacific Ocean on the West to the Nevada and Arizona borders on the East, covering over 40,000 square miles. The district includes 35 cities with more than 100,000 residents, and encompasses a cultural diversity virtually unmatched in the country.

    The USAO, with an authorized strength of approximately 264 Assistant United States Attorneys, is the second largest in the country (trailing only the District of Columbia Office, which, in addition to prosecuting federal crimes, also prosecutes all crimes committed within the District of Columbia, prosecutions that in other districts would be handled by local district attorneys). The USAO is divided into three litigating divisions, Criminal, Civil, and Tax , and a non-lawyer Administrative Division. The USAO's main offices are in Los Angeles. The USAO also has branch offices in Santa Ana (Orange County) and Riverside (Riverside County), which handle federal criminal cases originating in Orange, Riverside, and San Bernardino counties.

    Reflecting the size and diversity of the district, the cases handled by the USAO are among the most significant in the country, arising from investigations that span the country and often reach overseas as well. For example, in a one week period in December 2007, the USAO handled the following cases, among others:

    As these cases make clear, the attorneys and staff of the USAO for the Central District of California are proud of their work, and proud to represent the United States and the more than 18 million residents of this large and culturally diverse district. It is the mission and the pledge of the USAO to do so with determination, professionalism, and integrity.