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This is such a typical Harkin dodge. He has a canned answer for the pope question, and if you aren't ready for it, he wins. The interviewer wasn't ready for it, and Harkin won, regardless of the fact of what the pope said.
Still, I'll just bet Harkin has an answer for that, too. If nothing else, Harkin is crafty. When all else fails, he'll do the country bumpkin thing, and no interviewer is man enough to call him on it.