What is the function of federal law enforcement agencies?

• A. To enforce state laws within a single state.
• B. To enforce federal laws across state lines and within states.
• C. To adjudicate court cases.
• D. To regulate commerce within a city.

Answer: (B)

Federal law enforcement agencies exist to enforce federal laws across the country, including crimes that cross state lines or involve federal interests. They investigate and prosecute offenses defined by federal statutes, apply nationwide enforcement, and help ensure uniform rules no matter which state you’re in. They don’t adjudicate cases—that’s the job of the court system—and they’re not responsible for regulating commerce within a city; that regulatory role belongs to other agencies and local authorities. In short, they enforce federal laws nationwide.