Washington Examiner, but it provided a general statement to Yahoo News about the authority it has to monitor the social media presence of U.S. citizens. “The U.S. Postal Inspection Service is the primary law enforcement, crime prevention, and security arm of the U.S. Postal Service,” the statement read. “As such, the U.S. Postal Inspection Service has federal law enforcement officers, Postal Inspectors, who enforce approximately 200 federal laws to achieve the agency’s mission: protect the U.S. Postal Service and its employees, infrastructure, and customers; enforce the laws that defend the nation's mail system from illegal or dangerous use; and ensure public trust in the mail.”