As a result, “the recent increase in US inequality has little to do with global forces that might be expected to especially affect unskilled workers—namely, immigration and expanded trade with developing countries,” Lawrence (2008, 73) concluded. “Instead, the sources of increased inequality have been the rising share of the super rich—a development in which trade is likely to have played only a small role—and the increased share of profits in income, much of which could be cyclical.”

