Max Baucus
Max Sieben Baucus (né Enke; born December 11, 1941) is a retired American politician and diplomat who served as a United States Senator from Montana from 1978 to 2014. A member of the Democratic Party, he was a U.S. 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.
Jon Tester
In March 2012, the Montana GOP filed a complaint with the Senate Ethics Committee requesting an investigation into the actions of Tester and Max Baucus. The complaint cited a "Politico" report suggesting that Baucus' K Street connections were "warning clients against giving campaign contributions to Tester's Republican challenger Rep. Denny Rehberg". Tester denied any wrongdoing.