Education
Georgetown University Law Center. University of Saint Thomas.
Georgetown University Law Center. University of Saint Thomas.
Born in Watertown, South Dakota, Kornmann received a Bachelor of Arts from College of Saint Thomas in 1959 and an Bachelor of Laws from Georgetown University Law Center in 1962. He was in the United States Army from 1962 to 1963, and was also a Legislative assistant to United States. Senator George McGovern in 1963. Kornmann was an Executive secretary of South Dakota Democratic Party from 1963 to 1965.
He was in private practice in Aberdeen, South Dakota from 1965 to 1995, also working as an assistant city attorney for the City of Aberdeen from 1970 to 1986.
On January 23, 1995, Kornmann was nominated by President Bill Clinton to a seat on the United States District Court for the District of South Dakota vacated by John Bailey Jones. Kornmann was confirmed by the United States Senate on March 24, 1995, and received his commission the same day.
He assumed senior status on July 31, 2008.