Photos: Key players on the Hill in Syria debate —
Rep. Keith Ellison, D-Michigan, co-chairs the Congressional Progressive Caucus, made up of 72 Democrats, and is a member of the Congressional Black Caucus. Ellison, the first Muslim elected to Congress, is in favor of military action in Syria, though he is generally antiwar and "vastly prefers" diplomacy, a spokesman says. As the Democrats' chief deputy whip, he knows how to count votes.