This paper investigates the link between the trend in the returns to e
ducation and foreign competition in concentrated industries. We argue
that the impact of foreign competition on the relative wages of less s
killed workers depends on the market structure of the industry penetra
ted. The empirical evidence indicates that employment changes in a sma
ll group of trade-impacted concentrated industries can explain not onl
y part of the aggregate rise in wage inequality in the United States,
but also some of the differences in the trends in wage inequality acro
ss metropolitan areas.