Identify and explain the role of four federal agencies assigned law enforcement duties.

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Answers include the following: A component of the Department of Justice, the FBI is responsible for enforcing a number of federal laws, especially the laws against kidnapping and bank robbery. In addition to the FBI, the Coast Guard, the federal marshals, and a number of other law enforcement bodies exist within the federal government. The Secret Service, based in the Department of Homeland Security, is responsible both for protecting the safety of the president and the vice president and for catching counterfeiters of U.S. currency. Within the Justice Department, the Bureau of Alcohol, Tobacco, Firearms, and Explosives (ATF) is responsible for enforcing a variety of federal taxes and other laws having to do with the commodities in its title. The Drug Enforcement Administration (DEA) enforces federal laws concerning the sale and possession of illegal drugs. Postal Inspectors are responsible for enforcing laws concerning the use of the mail for fraud and other illegal purposes. The Customs Bureau is responsible for enforcing laws about imports into the United States, including some aspects of drug laws and the protection of endangered species. Finally, the Bureau of Citizenship and Immigration Services and the Border Patrol are responsible for enforcing immigration laws.