Max Baucus
![](/Images/godic/202412/23/Portrait_of_Ambassador_Max_Baucus2856.jpg")
![Baucus during his time in the House of Representatives](/Images/godic/202412/23/Max_Baucus_1977_Congressional_photo2856.jpg")
![Sen. Chuck Grassley (R-IA), Sen. Max Baucus (D-MT), and Rep. E. Clay Shaw (R-FL) (left to right) address the media after a meeting at the White House with President Bill Clinton.](/Images/godic/202412/23/MAXWH2856.jpg")
![Baucus, foreground, meets with Secretary of Treasury nominee Timothy Geithner, left](/Images/godic/202412/23/Baucus_Geithner_42856.jpg")
Max Sieben Baucus (born December 11, 1941) is an American politician who was a United States Senator from Montana from 1978 to 2014. A member of the Democratic Party, Baucus was the longest-serving U.S. senator from Montana. Baucus has been the United States Ambassador to China since 2014.