By JAMES CARNEY AND AMY SULLIVAN
March 20, 2008
The speech he delivered at the National Constitution Center inwas an artfully reasoned treatise on race and rancor in America, the most memorable speech delivered by any candidate in this campaign and one that has earned Obama comparisons to Lincoln, Kennedy and King. But that doesn’t mean it will succeed in its more prosaic mission of appealing to voters who have their doubts about Obama and his preacher. It left unanswered a crucial question: What attracted Obama to Wright in the first place?