The size of the undocumented immigrant population in the United States is probably about 9 million people. A report released by the U.S. Immigration and Naturalization Service in January 2003 estimated the size of the undocumented immigrant population at 7.0 million in 2000. A separate analysis by Jeff Passel of the Urban Institute estimated there were 8.5 million undocumented immigrants in 2000. Passel and others believe that net illegal immigration from Mexico alone has been growing at a rate of 500,000 people annually, which places current estimates at a minimum of 9.0 million unauthorized immigrants.In the 1990s, the undocumented immigrant...
