John Glenn of the Mercury Seven. Glenn resigned from NASA in January 1964. He planned to run for a U.S. Senate seat from Ohio, but an injury in February 1964 forced his withdrawal. He retired from the Marine Corps the following year. He lost a close primary election in 1970. A member of the Democratic Party, Glenn first won election to the Senate in 1974 and served for 24 years until January 1999. In 1998, while still a sitting Senator, Glenn flew on the "Discovery" space shuttle's STS-95 mission, and became the oldest person to fly in space and the only person
John Glenn about his doubts about verifying treaty compliance. First Lady Rosalynn Carter also spoke at the event, during which she criticized Glenn for speaking publicly about the issue. The Senate never ratified the treaty, in part because of the Soviet invasion of Afghanistan. Glenn served on the committee until 1985, when he traded it for the Armed Services Committee. Glenn became chairman of the Manpower Subcommittee of the Armed Services Committee in 1987. He introduced legislation such as increasing pay and benefits for American troops in the Persian Gulf during the Gulf War. He served as chairman until 1993, becoming chairman