Senator for nearly 36 years, making him the longest-serving Senator in Montana history.
President Barack Obama appointed Baucus to replace Gary Locke as the 11th United States Ambassador to China, a position that he held from 2014 until 2017.As the Chairman of the Senate Committee on Finance, Baucus played an influential role in the debate over health care reform in the United States.
He was also chairman of the Joint Committee on Taxation, a member of the Senate Committee on Agriculture, Nutrition and Forestry and the Senate Committee on Environment and Public Works, and was chairman of the Subcommittee on Transportation and Infrastructure.
Before his election to the Senate, Baucus was a member of the United States House of Representatives from 1975 to 1978, representing Montana's 1st congressional district.
He previously served in the Montana House of Representatives from 1973 to 1974.