Which agencies are part of federal jurisdiction?

• A. FBI, Secret Service, DEA.
• B. CIA, NSA, DHS.
• C. ATF, IRS, NOAA.
• D. IRS, DEA, CIA.

Answer: (A)

Federal jurisdiction means the national government’s authority to enforce laws across the entire country, which is carried out mainly by federal law‑enforcement agencies. The FBI, Secret Service, and DEA fit this role because they are designated to enforce federal statutes nationwide: the FBI handles a wide range of federal crimes and counterterrorism, the Secret Service conducts protection duties while also pursuing financial and cybercrime under federal law, and the DEA enforces controlled substances laws at the federal level.

Other groupings mix intelligence-focused agencies or non‑enforcement roles with enforcement bodies, or rely on departments rather than specific law‑enforcement arms. For example, intelligence agencies like the CIA and NSA focus on national security information rather than typical federal criminal enforcement, DHS is a department housing multiple agencies, and NOAA is a scientific agency. Therefore, the trio that clearly represents federal law‑enforcement authority under federal jurisdiction is the FBI, Secret Service, and DEA.