The ageing of the population presents a major fiscal challenge for the countries of Europe. The combination of increased longevity and a reduced birth rate will directly reduce the growth rates of the European economies by slowing the growth of the capital stock and by weakening the productivity...

Not all of that extra output will remain in the United States. If the trade deficit is reduced by three percent of GDP, the rise in exports and decline in imports will reduce output available for U.S. consumption and investment by about 0.3 percent a year

Although natural market forces should resolve such imbalances without the need for specific government policies, the government actions in both countries have actually contributed to their persistence and prevented market forces from correcting the problem. That may be about to change