Time to Just Shut it, Bill
The man has never done or said anything accidentally. Pointing out that Jesse Jackson won South Carolina twice is either;
1-A shot at Jackson for endorsing Obama.
2-A move to more fully ID Obama as the "black" candidate, not a uniter.
3-A subtle play to undermine his wife's campaign.
I'm not smart enough to figure out the motivation, but it was a dick move. I can't decide if he wants to derail her campaign, or if getting an incredibly unlikable woman with colossal unfavorables in the polls elected is his next Mt. Everest.