In State of Emergency: the third world invasion and conquest of America, Pat Buchanan is comparing the immigrant invasion of America from across the Mexican border-and of Europe from across the Mediterranean-to the barbarian invasions that ended the Roman Empire, the author writes with passion and conviction that we have begun the final chapter of the Death of the West. Unless the invasion is halted now, Buchanan argues, by midcentury America will be a country unrecognisable. The Third World dystopia that Theodore Roosevelt warned against when he said we must never let America become a “polyglot boardinghouse” for the world.