Those of us who remember 10th grade American History were (1) surprised that W remembered that much from that period of his life and (2) mystified by his need to declare that he's against American slavery in the 21st century.
But bohemond has an explanation for this: "You heard: 'I would appoint judges opposing Dred Scott.' Conservative Christians heard: 'I would appoint justices who will overturn Roe v. Wade'". Go read it.
I'm pretty convinced. Is he missing a piece of this analysis or did he figure out the subtext correctly?