http://www.cis.org/articles/2004/back1104.html
Between March of 2000 and 2004, the number of unemployed adult natives increased by 2.3 million, while the number of employed adult immigrants increased by 2.3 million.
Half of the 2.3 million increase in immigrant employment since 2000 is estimated to be from illegal immigration.
In addition to a growth in unemployment, the number of working age (18 to 64) natives who left the labor force entirely has increased by four million since 2000.
Even over the last year the same general pattern holds. Of the 900,000 net increase in jobs between March 2003 and 2004, two-thirds went to immigrant workers, even though they account for only 15 percent of all adult workers.
In just the last year, 1.2 million working-age natives left the labor force, and say that they are not even trying to find a job.
Immigrant job gains have occurred throughout the labor market, with more than two-thirds of their employment gains among workers who have at least a high school degree.
There is little evidence that immigrants take only jobs Americans don"™t want. Even those occupations with the highest concentrations of new immigrants still employ millions of native-born workers.
The decline in native employment was most pronounced in states where immigrants increased their share of workers the most.
Occupations with the largest immigrant influx tended to have the highest unemployment rates among natives.
The states with the largest increase in the number of immigrants holding jobs were Texas, North Carolina, Maryland, Georgia, California, Arizona, New Jersey, Virginia, and Pennsylvania.
Of the nation"™s largest metropolitan areas, the biggest increases in immigrant employment were in Los Angeles, Washington, D.C., Dallas, Houston, New York, and Seattle.
Recent immigration has had no significant impact on the nation"™s age structure. If the 6.1 million immigrants (in and out of the labor force) who arrived after 2000 had not come, the average age in America would be virtually unchanged at 36 years.