**Federal law enforcement** in the United States encompasses a complex network of over 80 agencies responsible for enforcing federal laws and safeguarding national security. These agencies operate at a national level, handling crimes and issues beyond the jurisdiction of state and local police forces. The most prominent federal law enforcement bodies include the Federal Bureau of Investigation (FBI), Central Intelligence Agency (CIA), Drug Enforcement Administration (DEA), Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF), U.S. Secret Service, U.S. Marshals Service, Immigration and Customs Enforcement (ICE), and the Department of Homeland Security (DHS)[1][2][4][6]. The **FBI**, established in 1935 and part of the Department of Justice, is the largest and most well-known federal agency. It investigates a wide range of crimes from terrorism and cybercrime to organized crime and civil rights violations, with jurisdiction throughout the U.S. and partnerships with state and local agencies[2][4]. The **CIA** focuses on gathering foreign intelligence and conducting covert operations to protect U.S. security internationally[1]. The **DEA**, founded in 1973 during the War on Drugs, targets drug trafficking and controlled substances crimes nationwide[2][4]. The **ATF** specializes in crimes involving firearms, explosives, arson, and alcohol and tobacco diversion[4]. The **U.S. Marshals Service** handles judicial security, fugitive apprehension, prisoner transport, and asset forfeiture[4]. Federal law enforcement agencies have evolved to meet the challenges of modern threats, including terrorism, cybercrime, and transnational criminal organizations. They often collaborate closely with each other and with state and local law enforcement to leverage resources and expertise. The federal system’s decentralized and specialized structure reflects the diverse nature of threats facing the U.S., with agencies adapting advanced technologies and intelligence capabilities to maintain public safety and national security[1][3][5]. The Federal Law Enforcement Officers Association (FL