Alan Simpson is the co-chair of President Obama’s Deficit Commission, which is charged with creating a bipartisan consensus for balancing the budget. Lately Simpson’s foulmouthed tirades have drawn at least as much attention as the Commission’s actual work. His latest rant — which includes denigrating an activist for women’s issues with remarks about “a milk cow with 310 million tits” — crosses the line once and for all. It demonstrates conclusively that he possesses neither the judgment, the ability, nor the emotional stability to carry out his mission. He’s become an embarrassment to the President and an impediment to his Commission’s objectives. He must resign immediately. If he’s unwilling to do so, the President must fire him.