I agree. Obama has done irreparable harm and set things back decades. Cain sounds like a great man; I just don’t think he’ll stand a chance of getting elected.
However....he DOES have a better chance than Gingrich!
Any black challenger will have to make himself (or herself) clear enough to make the contest look like more than just “the devil we know vs. the devil we don’t know” to the average only slightly politically aware American.