Michael Bradley Enzi was an American politician who served in the United States Senate from Wyoming as a member of the Republican Party from 1997 to 2021. Prior to his tenure in the United States Senate he served as mayor of Gillette, Wyoming, in the Wyoming House of Representatives from Campbell County, and the Wyoming Senate from the 24th district. He was the longest-serving senator from Wyoming since Francis E. Warren.

John Anthony Barrasso III is an American physician and politician serving as the senior United States senator from Wyoming, a seat he has held since 2007. A member of the Republican Party, he served in the Wyoming State Senate from 2003 to 2007. As Chair of the Senate Republican Conference since 2019, he is the third-ranking Senate Republican.