A federal law enforcement agency in the United States is a government organization entrusted with enforcing federal laws, maintaining public safety, and upholding the Constitution and legal principles. Their authority extends nationwide, unlike local police, and they often specialize in specific areas like drug trafficking, immigration, or financial crimes. This network of agencies collaborates and shares information to effectively serve and protect the nation, from investigating major crimes and apprehending fugitives to safeguarding national security and high-ranking officials.