Examines the principal positions which have emerged among economists about immigration's impacts, and then reports the results of empirical analysis of the wage and employment effects of both recent undocumented aliens and settled migrants on native-born workers. A large 1980 census microdata bank is used to permit separate estimates for men and women, subdivided by race and Spanish origin. -from Author

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educational status Negro Americas economics population Migrants demography Caucasian developing country Population Dynamics Developing Countries immigration sex difference Ethnic Groups ethnic group Developed Countries Illegal Migrants socioeconomic status Hispanics American workers Salaries and Fringe Benefits USA wage and employment effects Hispanic Americans United States income North America social status economic development health care manpower Health Manpower wage Socioeconomic Factors personnel management socioeconomics Western Hemisphere Wages Whites Article employment status migration age international migration Sex Factors Age Factors population and population related phenomena developed country Demographic Factors Emigration and Immigration Economic Factors Transients and Migrants social class Northern America Blacks Population Characteristics Human Resources employment Labor Force