The concerns surrounding Trump’s immigration clampdown in the Tar Heel state speak to a tension at the center of the president’s immigration agenda.Patrick Sebastian, a GOP pollster based in North Carolina, said voters “draw a clear line” between deporting immigrants who are living in the country illegally and working but not breaking other laws, and unauthorized immigrants who have committed crimes. “In purple states, there’s broad support for removing the latter — and the left looks foolish protesting that,” Sebastian said. “But the other narrative has gotten more play over the past week, and that could be a problem for...