The senators of the Gang of Six are Democrats - Dick Durbin, Kent Conrad and Mark Warner; and Republicans - Mike Crapo, Tom Coburn and Saxby Chambliss. This group is led by Mark Warner. However, the final proposal was eventually presented by only 5 senators on account of resignation of the senator, Tom Coburn. He quit because of a disagreement between him and the other senators on cutting the Social Security and Medicare. Coburn said, "The only way we get out of this problem is increasing revenues,".