Chuck Grassley

Charles Ernest Grassley born September 17 1933 is an American politician serving as the president pro tempore of the United States Senate since 2025 a role he also held from 2019 to 2021 A member of the Republican Party Grassley is the senior United States senator from Iowa serving since 1981 He is the dean of the United States Senate Before becoming a senator Grassley served eight terms in the Iowa House of Representatives 19591975 and three terms in the United States House of Representatives 19751981 He has served three stints as Senate Finance Committee chairman during periods of Republican Senate majority Upon the retirement of Orrin Hatch on January 3 2019 Grassley became the Senates most senior Republican and its president pro tempore Upon Patrick Leahys retirement in January 2023 Grassley became the most senior member of the Senate At 91 years 9 months and 16 days old Grassley is the oldest sitting United States senator the longestserving Republican in congressional history and the sixthlongestserving US senator in history He served as president pro tempore emeritus of the Senate from 2021 to 2025 During his four decades in the Senate Grassley has chaired the Senate Finance Committee the Senate Narcotics Caucus the Senate Judiciary Committee and the Senate Aging Committee