Various federal law enforcement agencies are authorized under different parts of the United States Code (U.S.C.). Most are limited by the U.S. Code to investigations into matters that are specifically within the jurisdiction of the federal government. There are exceptions, with some agencies and officials enforcing the codes of U.S. states and Native American tribes in the United States. Some federal investigative powers have been expanded in practice, particularly since the passage of the USA PATRIOT Act in October 2001.  However, when the U.S. Department of Homeland Security (DHS) was created in 2002 in response to the terrorist attacks of September 11, 2001, it became the department with the largest number of sworn armed law enforcement officers and officers. when it came to authorities that play a role in protecting the country from terrorism. These included large agencies such as the United States. Immigration and Customs Enforcement Homeland Security Investigations (HSI), the United States Secret Service (USSS), the United States Coast Guard (USCG), the Transportation Security Administration (TSA), and the United States Customs and Border Protection (CBP) (created by the merger of the former United States Border Patrol, United States Customs Service, and Animal and Plant Health Inspection Service (APHIS) agencies of the United States Department of Agriculture United States into a single agency within DHS).  For the purposes of this section, “representation” means any representation provided by a federal law enforcement officer (as defined in section 115) or by another person at the request or with the consent of such an officer. (Pub.
Agencies in bold are law enforcement agencies (LEAs). The U.S. Department of Justice was once the largest and still is the largest collection of federal law enforcement agencies. He has served most law enforcement functions at the federal level and includes the United States Marshals Service (USMS), the Federal Bureau of Investigation (FBI), the Drug Enforcement Administration (DEA), the Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF), the Federal Bureau of Prisons (BOP) and others.  The U.S. federal government empowers various law enforcement agencies to enforce law and order on matters affecting the country as a whole.  APPLICATION FOR PROSECUTION. Upon receipt of a written request from a federal enforcement officer for information to be retained under this subsection, the financial institution must provide the information to the requesting officer no later than 7 days after receiving the request. independent agencies and federally administered institutions; The court shall order that service of a copy of the order under this subsection be effected by a federal law enforcement officer (e.g., a United States field marshal or an official or representative of the United States Customs Service, the Secret Service, the Federal Bureau of Investigation, or the United States Post Office) or by a state or local law enforcement officer. who, at the time of service, enters the attachment on the basis of the order. Federal law enforcement in the United States is more than two hundred years old. For example, the Postal Inspection Service can trace its origins back to 1772, while the U.S.
Marshals Service dates back to 1789.  While the majority of federal law enforcement agencies work for the departments of Justice and Homeland Security, there are dozens of other federal law enforcement agencies among other executive departments, as well as under the federal legislature and the judiciary. Other agencies, such as the FBI, are relatively new and were created in the early twentieth century. Other agencies have been reformed, such as the ATF, which was only founded in 1972 but whose origins date back to 1886. .