[1]https://news.yahoo.com/the-postal-service-is-running-a-running-a-covert-opera tions-program-that-monitors-americans-social-media-posts-160022919.html The law enforcement arm of the U.S. Postal Service has been quietly running a pr ogram that tracks and collects Americans’ social media posts, including those a. .. References 1. https://news.yahoo.com/the-postal-service-is-running-a-running-a-covert-operations-program-that-monitors-americans-social-media-posts-160022919.html