Within the reliably Republican terrain of South Florida, a quiet fracture is widening over the very issue that has long unified the GOP. At least one House Republican has moved beyond private doubt into public dissent, committing campaign resources to challenge the scope of Trump's immigration enforcement in a district where such a stance carries real political risk. It is a reminder that governing coalitions, however solid they appear from a distance, are always composed of particular people in particular places — and that the distance between a national mandate and a local constituency can b