Ken Mehlman and James Carville may not agree on much, coming from opposite parties, but each is willing to ride our backs to victory.GEORGE W. BUSH has rewarded his campaign manager Ken Mehlman, who executed the divisive strategy this president rode to re-election, by naming him to head the Republican National Committee. The sexual orientation of Mehlman, who is 38 and unmarried, has long been the subject of speculation, and he refused to answer earlier this year when asked directly by this publication whether he or other top Bush campaign staffers are gay.The announcement raises mixed emotions for me. I...