Jack Buechner attended the public schools of his home and thereafter until 1962, the Benedictine College in Atchison (Kansas). After a subsequent law degree from Saint Louis University and his 1965 was admitted to the bar he began in St. Louis County to work in this profession. He was also active in the real estate industry. At the same time he proposed as a member of the Republican Party launched a political career. Between 1972 and 1982 he sat as an MP in the House of Representatives from Missouri; in the years 1964, 1980 and 1988 he was a delegate to the Republican National Conventions relevant.
In the congressional elections of 1986 Buechner in the second electoral district of Missouri was in the U.S. House of Representatives in Washington DC chosen, where he became the successor of Robert A. Young on January 3, 1987. After a re-election he was able to complete in Congress until January 3, 1991, two legislative sessions. There he was a member of the Committee on Budgets and the Committee on Science and Technology. He was regarded as rather conservative MP.
In 1990 Buechner defeated the Democrat Joan Kelly Horn. After retiring from Congress, he worked as an attorney for several law offices in Washington. Between 2001 and 2005 he was president of the National Republican Institute for International Affairs. He then continued his legal practice. Buechner is married for the third time and has three children.