Donald Riegle

A man stood alongside US President Bill Clinton and Rosa Parks as the latter was awarded the Congressional Medal, the highest civilian honour in the United States, in 1999. (TV: )

Behind the scenes
Although unnamed in the episode, the man is, former US Senator from Michigan. The footage used in the episode is actually from a Clinton campaign rally in 1992, at which Riegle spoke. In the real world, Riegle retired from the Senate in 1995, four years prior to Rosa Parks being awarded the Congressional Gold Medal.