Former United Nations Ambassador Nikki Haley on Thursday blamed a “Democrat plant” for a question about what caused the Civil War. The presidential candidate neglected to include “slavery” in her list of reasons. During a town hall on Wednesday, a member of the audience asked the former South Carolina governor what caused the Civil War. She gave an unclear word-salad response. “I mean, I think the cause of the Civil War was basically how government was going to run. The freedoms and what people could and couldn’t do,” she said. “I think it always comes down to the role of...