Reform and Maga are correct that ageing populations are storing up huge social problems, but our prosperity still rests on the hard work of migrants A growing mountain of reports highlights one of the US’s most fascinating features: the fact that people in red states seem to breed far more than those in the blue ones, and are being newly encouraged to do so by high-profile figures who are desperate for a Maga baby boom. The vice-president, JD Vance, and his wife are expecting their fourth child