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Federal criminal cases may be brought by the U.S. Attorney's Office, the Criminal Division of the U.S. Department of Justice, or other authorized law enforcement agencies, such as the U.S. Marshals Service (USMS). The 93 U.S. attorneys serve as the chief federal law enforcement officers within their respective districts. Investigations are most commonly referred to a U.S. attorney by a federal investigative agency, including the Federal Bureau of Investigation (FBI), Drug Enforcement Administration (DEA), United States Citizenship and Immigration Services (USCIS), Customs and Border Protection (CBP), Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF), and U.S. Secret Service. Investigations are also referred by a state or local investigative agency. Investigations may also be initiated—and cases brought directly—by U.S. attorneys or by the Criminal Division of the U.S. Department of Justice.

After criminal investigations are initiated and criminal suspects are referred to them, U.S. attorneys may file charges against defendants in a U.S. district court, or they may file cases before U.S. magistrates, who have the authority to adjudicate misdemeanor offenses (18 U.S.C. § 3401). Due to the relatively less serious nature of misdemeanor cases, and because they are handled by magistrates, the U.S. attorneys count these cases as criminal matters disposed by U.S. magistrates. The decision to prosecute a suspect in a criminal matter depends on many factors, including the Attorney General's priorities, U.S. attorney priorities and resources, laws governing each type of offense, and the strength of evidence in each case.

Publications & Products

Federal Justice Statistics, 2012 - Statistical Tables Describes the annual activity, workloads, and outcomes associated with the federal criminal justice system from arrest to imprisonment, using data from the U.S. Marshals Service (USMS), Drug Enforcement Administration (DEA), Executive Office for U.S. Attorneys (EOUSA), Administrative Office of the U.S. Courts (AOUSC), and Federal Bureau of Prisons (BOP).
	PDF (2.6M) | ASCII file (43K) | Comma-delimited format (CSV) (Zip format 65K) Part of the Federal Justice Statistics Series
Federal Justice Statistics, 2011 - Statistical Tables Provides annual data on workload, activities, and outcomes associated with federal criminal cases.
	PDF (2.7M) | ASCII file (65K) | Comma-delimited format (CSV) (Zip format 67K) Part of the Federal Justice Statistics Series
Federal Justice Statistics, 2011–12 Describes the annual activity, workloads, and outcomes associated with the federal criminal justice system from arrest to imprisonment, using data from the U.S. Marshals Service (USMS), Drug Enforcement Administration (DEA), Executive Office for U.S. Attorneys (EOUSA), Administrative Office of the U.S. Courts (AOUSC), and Federal Bureau of Prisons (BOP).
	PDF (3.7M) | ASCII file (59k) | Comma-delimited format (CSV) (Zip format 50K) Part of the Federal Justice Statistics Series
Federal Justice Statistics, 2010 - Statistical Tables Describes criminal case processing in the federal justice system, including arrest and booking through sentencing and corrections.
	PDF (3.5M) | ASCII file (87K) | Spreadsheets (Zip format 88K) Part of the Federal Justice Statistics Series
Federal Justice Statistics, 2010 Describes the annual activity, workloads, and outcomes associated with the federal criminal justice system from arrest to imprisonment, using data from the U.S. Marshals Service (USMS), Drug Enforcement Administration (DEA), Executive Office for U.S. Attorneys (EOUSA), Administrative Office of the U.S. Courts (AOUSC), and the Federal Bureau of Prisons (BOP).
	PDF (4.3M) | ASCII file (67K) | Comma-delimited format (CSV) (Zip format 183K) Part of the Federal Justice Statistics Series
Immigration Offenders in the Federal Justice System, 2010 Presents data on criminal and civil immigration violations handled by the federal justice system over the last decade.
	Press Release | PDF (1.8M) | ASCII file (23K) | Comma-delimited format (CSV) (Zip format 67K)
Federal Justice Statistics, 2009 - Statistical Tables Presents data on criminal and civil immigration violations handled by the federal justice system over the last decade.
	Press Release | PDF (1.2M) | ASCII file (23K) | Spreadsheets (Zip format 65K) Part of the Federal Justice Statistics Series
Federal Justice Statistics, 2009 Describes the annual activity, workloads, and outcomes associated with the federal criminal justice system from arrest to imprisonment, using data from Drug Enforcement Administration, U.S. Marshals Service, Executive Office for U.S. Attorneys, Administrative Office of the U.S. Courts, U.S. Sentencing Commission, and the Federal Bureau of Prisons.
	Press Release | PDF (835K) | ASCII file (42K) | Spreadsheets (Zip format 36K) Part of the Compendium of Federal Justice Statistics Series
Federal Justice Statistics, 2009 - Statistical Tables FEDERAL IMMIGRATION ARRESTS INCREASED ALONG U.S.-MEXICO BORDER BETWEEN 2005 AND 2009
	Press Release Part of the Compendium of Federal Justice Statistics Series
Federal Justice Statistics, 2009 FEDERAL IMMIGRATION ARRESTS INCREASED ALONG U.S.-MEXICO BORDER BETWEEN 2005 AND 2009
	Press Release Part of the Compendium of Federal Justice Statistics Series

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