J. Bennett Johnston
John Bennett Johnston Jr. (born June 10, 1932) is a retired American attorney, politician, and later lobbyist. A member of the Democratic Party, Johnston represented Louisiana in the U.S. Senate from 1972 to 1997.
Beginning his political career when elected as a state representative from Caddo Parish in 1964, Johnston also served in the state senate before winning election to the U.S. Senate.
Source: Wikipedia