He says he's a moderate Republican, and the party is on a 'slide to authoritarianism'

Adam Kinzinger delivers remarks during the fifth hearing by the House Select Committee to Investigate the January 6th Attack, in June 2022. (Alex Wong/Getty Images)

Adam Kinzinger describes himself as a Republican moderate; something he says is a dying breed in American politics.

Who is he? A former Illinois congressman, Kinzinger served from 2011 until finishing his term at the beginning of this year.