Looking for Local Labor Market Effects of NAFTA
利用1990-2000年美国人口普查数据，估计北美自由贸易协定对美国工资的影响，发现该协定显著降低了受影响行业和地区蓝领工人的工资增长，甚至波及当地服务业工人。
Using U.S. Census data for 1990 to 2000, we estimate effects of NAFTAon U.S.wages.We look for effects of the agreement by industry and by geography, measuring each industry's vulnerability to Mexican imports and each locality's dependence on vulnerable industries. We find evidence of both effects, dramatically lowering wage growth for blue-collar workers in the most affected industries and localities (even for service-sector workers in affected localities, whose jobs do not compete with imports). These distributional effects are much larger than aggregate welfare effects estimated by other authors.