[1] A member of the Minnesota Democratic–Farmer–Labor Party (DFL), he represented Washington county in District 51B from 1973 until 1983.
Sieben was born on June 23, 1946, and grew up in Hastings, Minnesota.
Sieben attended law school at the University of Minnesota, graduating with a J.D.
After law school, Sieben served six years in the United States Army Reserve.
During his time in the Legislature, Sieben served on many committees, including: Appropriations (Chair), Commerce and Economic Development, Judiciary, Metropolitan and Urban Affairs and Rules and Legislative Administration.