Immigration Economic Restructuring and Internal Migration among U.S. Metropolitan Labor Markets, 1965-1990

小行星9310647 人们对移民流向某一目的地如何影响本国移民离开的决定或对目的地的选择知之甚少。 也就是说，进入美国的移民流是否与内部人口流动有关，这种活动是否构成了更广泛的区域间劳动力交换体系的一部分？ 如果是这样的话，那么必须重新评估一个国家内的人口流动不受移民流影响的假设。 此外，以前的研究衡量移民对当地人在受影响的劳动力市场的福利的影响也需要重新评估。 不认识到移民与当地人国内移徙之间的重要联系，可能会导致严重低估移民对当地人福利的影响，因为许多移民影响会在移民系统内消散。 该项目将通过为1965年至1990年期间的美国开发一系列移民模型来衡量随着时间的推移，本地移民对移民的反应的稳定性。 这些模型将测试所有大都市地区按职业分列的移民流动和国内移徙流动之间的联系。 21个最大的大都市区将进行详细审查，以阐明移民和移民对每个城市的就业结构的影响，随着时间的推移的背景微妙。 一系列移民的计量经济学模型将使用美国人口普查的公共使用微观数据样本进行估计。 1965年，美国通过了一项具有里程碑意义的立法，放宽了美国移民数量的上限。迄今为止，计量经济学研究还没有发现移民供应的增加对当地人的收入或就业机会产生重大不利影响的情况。 本研究项目将移民影响的分析扩展到移民是否导致本地工人迁移到其他地点以及这种迁移对两个群体的就业状况有何影响的问题。 它涉及到发现移民对移民的反应是否均匀跨越空间，这将增加有关移民进入美国的空间背景的重要新知识。 ***

9310647 Barff Little is known about how flows of immigrants to a particular destination affect the decision to leave or the destination choice of native migrants. That is, are flows of immigrants into the United States linked to internal flows of population, and does this activity form part of a broader system of interregional labor exchange? If so, then the hypothesis that population movements within a country are unaffected by immigrant streams must be reassessed. Additionally, previous research measuring the effect of immigration on the welfare of natives in impacted labor markets also requires reevaluation. Failure to recognize important linkages between immigration and internal migration of natives may result in serious underestimation of the effects of immigration on the welfare of natives since many immigration impacts be dissipated within the migration system. This project will measure the stability of the native migratory response to immigration over time by developing a series of migration models for the United States between 1965 and 1990. The models will test the linkage between immigrant flows and internal migration streams by occupation for all metropolitan areas. The 21 largest metropolitan areas will be examined in detail in order to illuminate the contextual subtleties of immigrant and migrant impact on each city's employment structure through time. A series of econometric models of migration will be estimated using public use microdata samples from the U.S. Census of Population for the time period in question. In 1965, landmark legislation was passed which relaxed the upper limits on the volume of immigration to the U.S. Econometric research so far has uncovered no instance where an increase in the supply of immigrants significantly and adversely affected the earnings or employment opportunities of natives. This research project extends the analysis of immigrant impacts to the question of whether immigrants cause native workers to move to other locations and what affect this movement has on the employment situation of both groups. It involves finding out if the migration response to immigration is even across space, which will add important new knowledge about the spatial context of immigration into the United States. ***