Lowry & Ponnuru Eliminate Slavery from the National Pyche

Via John Holbo, Ramesh Ponnuru and Rich Lowry continue National Review’s proud tradition of trying to minimize the number of African-American conservatives:

Victor Davis Hanson notes that one reason for American exceptionalism may be that we did not inherit from England “a large underclass of only quasi-free people attached to barons as serfs.” Sadly, a worse institution took root here, but never became part of the national psyche.

Always a good time for a link to “Why The South Must Prevail”. Prevail in what, though? With slavery so far from the national psyche, what could the conflict have possibly been about?