Today's New York Times editorial:
When questioned about the enormous income inequality in the United States, the cheerleaders of America’s unfettered markets counter that everybody has a shot at becoming rich here. The distribution of income might be skewed, but America’s economic mobility is second to none. That image is wrong. (...)
Recent research surveyed by the Organization for Economic Cooperation and Development, a governmental think tank for the rich nations, found that mobility in the United States is lower than in other industrial countries. One study found that mobility between generations — people doing better or worse than their parents — is weaker in America than in Denmark, Austria, Norway, Finland, Canada, Sweden, Germany, Spain and France. In America, there is more than a 40 percent chance that if a father is in the bottom fifth of the earnings’ distribution, his son will end up there, too. In Denmark, the equivalent odds are under 25 percent, and they are less than 30 percent in Britain.