how about the National Bureau of Economic Research? Are they crazy biased liberals, too?
http://nber15.nber.org/papers/w4955
Check Borjas more recent report..
http://www.cis.org/articles/2004/back504.html
Among this Backgrounder’s findings:
• By increasing the supply of labor between 1980 and 2000, immigration reduced the average annual earnings of native-born men by an estimated $1,700 or roughly 4 percent.
• Among natives without a high school education, who roughly correspond to the poorest tenth of the workforce, the estimated impact was even larger, reducing their wages by 7.4 percent.
• The 10 million native-born workers without a high school degree face the most competition from immigrants, as do the eight million younger natives with only a high school education and 12 million younger college graduates.
• The negative effect on native-born black and Hispanic workers is significantly larger than on whites because a much larger share of minorities are in direct competition with immigrants.
• The reduction in earnings occurs regardless of whether the immigrants are legal or illegal, permanent
or temporary. It is the presence of additional workers that reduces wages, not their legal status.