Capital in the Twenty-First Century

by Thomas Piketty

Immigration is the mortar that holds the United States together, the stabilizing force that prevents accumulated capital from acquiring the importance it has in Europe; it is also the force that makes the increasingly large inequalities of labor income in the United States politically and socially bearable. For a fair proportion of Americans in the bottom 50 percent of the income distribution, these inequalities are of secondary importance for the very simple reason that they were born in a less wealthy country and see themselves as being on an upward trajectory. Note, moreover, that the mechanism of redistribution through immigration, which enables individuals born in poor countries to improve their lot by moving to a rich country, has lately been an important factor in Europe as well as the United States. In this respect, the distinction between the Old World and the New may be less salient than in the past.