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Abstract

Effects of Legal and Unauthorized Immigration on the U.S. Social Security System
by Hugo A. Benítez-Silva, Eva Carceles-Poveda and Selcuk Eren
WP 2011-250
Immigration is having an increasingly important effect on the social insurance system in the United States. On the one hand, eligible legal immigrants have the right to eventually receive pension benefits, but also rely on other aspects of the social insurance system such as health care, disability, unemployment insurance, and welfare programs, while most of their savings have direct positive effects on the domestic economy. On the other hand, most undocumented immigrants contribute to the system through taxed wages, but they are not eligible for these programs unless they attain legal status, and a large proportion of their savings translates into remittances, which have no direct effects on the domestic economy. Moreover, a significant percentage of immigrants migrate back to their countries of origin after a relatively short period of time, and their savings while in the US are predominantly in the form of remittances. Therefore, any analysis that tries to understand the impact of immigrant workers on the overall system has to take into account the decisions and events these individuals face throughout their lives, as well as the use of the government programs they are entitled to. We propose a life-cycle OLG model in a General Equilibrium framework of legal and undocumented immigrants’ decisions regarding consumption, savings, labor supply and program participation to analyze their role in the financial sustainability of the system. Our analysis of the effects of potential policy changes, such as giving some undocumented immigrants legal status, shows increases in capital stock, output, consumption, labor productivity, and overall welfare. The effects are relatively small in percentage terms, but considerable given the size of our economy.
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