As the largest caucus of Democrats on Capitol Hill, the Progressive Caucus has heavyweight size but flyweight punch.

During the last four years, its decisive footwork has been so submissive to the White House that you can almost hear the laughter from the West Wing when the Progressive Caucus vows to stand firm.

A sad pattern of folding in the final round has continued. When historic votes come to the House floor, party functionaries are able to whip the Progressive Caucus into compliance. The endgame ends with the vast majority of the caucus members doing what Obama wants.