Jensen, after leaving elected office, served on the Minnesota Tax Court from 1981 until 1986, appointed by then-Governor and fellow Republican Al Quie.

After returning from the war, he attended law school at the University of Minnesota and graduated with honors in 1949.

[2] In 1966, after several years away from public service, Jensen ran successfully for the District 17 state senate seat being vacated by John M. Zwach, Sr., who was running for the U.S. Congress.

[4] As representative and senator, Jensen allied with the House Conservative Caucus at a time when the legislature was still officially nonpartisan.

[citation needed] While in the senate, Jensen served on the Commerce, Elections, Environment & Natural Resources, General Legislation, Health, Welfare & Corrections, Judiciary, Public Highways, Rules & Administration, and Taxes & Tax Laws committees, and on various other committee incarnations and subcommittees.