Career
He was the Iowa State Senator from the 19th District from 2003–2007 and is a former chairman of the Republican Party of Iowa. He was succeeded in the Iowa Senate by Democrat Rob Hogg. During his most recent term of office, Larson served on several committees in the Iowa Senate - the Commerce committee.
The Education committee.
The Judiciary committee. The Ways and Means committee.
And the Ethics committee, where he was co-chairman On November 30, 2007, the White House announced that Larson would be nominated to become Ambassador Extraordinary and Plenipotentiary of the United States of America to the Republic of Latvia in 2008, replacing the Catherine Todd Bailey.
In June 2009, President Barack Obama announced he was nominating Judith Gail Garber to replace Larson as United States. Ambassador to Latvia.