TY - JOUR AU - Borjas,George J. TI - National Origin and the Skills of Immigrants in the Postwar Period JF - National Bureau of Economic Research Working Paper Series VL - No. 3575 PY - 1991 Y2 - January 1991 UR - http://www.nber.org/papers/w3575 L1 - http://www.nber.org/papers/w3575.pdf N1 - Author contact info: George J. Borjas Harvard Kennedy School 79 JFK Street Cambridge, MA 02138 Tel: 617/495-1393 Fax: 617/495-9532 E-Mail: gborjas@harvard.edu M1 - published as George J. Borjas. "National Origin and the Skills of Immigrants in the Postwar Period," in George J. Borjas and Richard B. Freeman, editors, "Immigration and the Workforce: Economic Consequences for the United States and Source Areas" University of Chicago Press (1992) M2 - featured in NBER digest on 1991-05-01 AB - The postwar period witnessed major changes in U.S. immigration policy and in economic and political conditions in many of the source countries. As a result, the size, origin, and skill composition of immigrant flows changed substantially. This paper uses the Public Use Samples of the five decennial Census between 1940 and 1980 to document the extent of these changes. The empirical analysis yields two substantive results. First, almost all of the measures of skills or labor market success available in the data document a steady deterioration in the skills and labor market performance of successive immigrants waves over the postwar period, with this trend accelerating since 1960. Second, the study suggests that a single factor, the changing national origin mix of the immigrant flow, is almost entirely responsible for this trend. ER -