A member of the Democratic Party , he represented North Dakota in the U.S. House of Representatives ( 1959 -- 1960 ) and the U.S. Senate ( 1960 -- 1992 ) .
American lawyer and politician .
A member of the Democratic Party , lawyer represented North Dakota in the U.S. House of Representatives ( 1959 -- 1960 ) and the U.S. Senate ( 1960 -- 1992 ) .
American lawyer and politician .