Chuck Grassley

Charles Ernest Grassley is an American politician serving as the president pro tempore emeritus of the United States Senate, and the senior United States senator from Iowa, having held the seat since 1981. In 2022, he was reelected to his eighth Senate term, having first been elected in 1980. He is the longest serving Republican in U.S. Senate history, having overtaken Orrin Hatch’s record in January 2023. Wikipedia*
On the C-SPAN Networks:
Chuck Grassley has 3,143 videos in the C-SPAN Video Library; the first appearance was a 1984 Senate Committee. The year with the most videos was 2020 with 169 videos. The year with the highest average number of views per program was 2017 with an average of 13,532 views per program. Most appearances with Max Baucus (30), Orrin Hatch (20), John Cornyn (18). Most common tags: Tax Policy, Federal Budget, Iowa.
President Pro Tempore (Jan 03, 2019 - Jan 20, 2021) Videos: 3,142