Larry Wu-tai Chin

Larry Wu-tai Chin was a Chinese Communist spy who worked for the United States government for 37 years (1944–1981), including positions at the U.S. Army and the CIA, while secretly being a mole for the Chinese Communist Party's intelligence apparatus from the very beginning. He kept passing classified documents and secret information to the People's Republic of China even after his retirement, until he was finally exposed in 1985.