John D. Dingell Jr.

John David Dingell Jr. was a Polish-American politician who served as a member of the United States House of Representatives from 1955 until 2015. A member of the Democratic Party, he holds the record for longest-ever serving member of Congress in American history, representing Michigan for more than 59 years. Wikipedia*
On the C-SPAN Networks:
John D. Dingell Jr. has 927 videos in the C-SPAN Video Library; the first appearance was a 1983 Senate Committee as a Democratic Representative for Michigan's 16th district. The year with the most videos was 1995 with 87 videos. The year with the highest average number of views per program was 2010 with an average of 10,589 views per program as a Democratic Representative for Michigan's 15th district. Most appearances with Henry Waxman (19), Nancy Pelosi (18), Dick Gephardt (15). Most common tags: Health Care, Energy Policy, Health Care Financing.