Columbia, S.C.—With bickering and tensions rising in the Republican Party, a Mitt Romney nomination could force Evangelical Christians to call for a South Carolina secession from the Union. That simple call for secession could result in a following by other southern states, leading to a domino effect that could result in another bloody Civil War. For most Republican Presidential candidates, a missionary past would be an asset. Having spent two years in mission work after high school is a sign of early reverence for God, commitment to the Judeo-Christian ethic, and strength of character to take to the Oval Office....