Lott should step down from majority leader, but less because of his ridiculous comment and more because of his feckless leadership. While it was shameful, I am willing to dismiss Lotts comment at Stroms birthday as someone who was being overly effusive in praise, and in an attempt to offer a gratuity lost their head. I quite frankly doubt that Lott even thought about the fact that Strom ran as a segregationist--I rather doubt he thinks often for that matter. Rather, I think he was trying to be "nice" to the old codger.
By contrast, Lotts generally spineless administration, and his inability to articulate a message, is something which cannot be dismissed as haphazard. It is systematic idiocy. He has been a bad face for the Republican party, because he gives the appearance--if not the reality--of being an empty suit. But this is what happens when you nominate an Ol Miss cheerleader to be Majority Leader for the United States Senate.