The hidden impact of an aging population: Across much of the world, the same phenomenon is emerging: growing voter resistance to further immigration. Many citizens feel increasingly alienated from their own countries as more people arrive with different skin colors, religions, customs, values, and historical backgrounds. Some politicians exploit this sentiment, blaming immigrants for issues such as housing shortages, stagnating real disposable incomes, and rising crime rates. Yet consider a country like Japan, where the population is rapidly aging and resistance to immigration remains strong. Even there...