text:  Former House Majority Whip Jim Clyburn saved President Biden's fortunes in the South Carolina primary four years ago. Clyburn laughed when I asked if his services were needed to come to the rescue again. But no one is really sure what could or would happen if there's a movement to find a new candidate. Republicans said the debate highlighted their I told you so argument about the fitness of the president. House Speaker Mike Johnson said forget the nomination. He's worried about the presidency right now.