Which federal law enforcement agency has unlimited jurisdiction?

The choice indicating that no federal agency has unlimited jurisdiction is correct because jurisdiction is inherently limited by specific legal boundaries defined by legislation, the Constitution, and the role of each agency. Each federal law enforcement agency operates within particular areas of authority and responsibility. For example, the CIA is primarily focused on intelligence and national security outside the United States, while the DEA deals specifically with drug-related offenses.

Similarly, the Department of Justice encompasses various agencies, such as the FBI and U.S. Marshals, each tasked with defined missions, including but not limited to criminal investigations, terrorism, and federal law enforcement, none of which grant them unlimited powers or authority across all jurisdictions. This structured framework ensures accountability and specialization in how federal laws are enforced, meaning that there is no single agency that holds unlimited jurisdiction.