The Economic Mobility Project has released a new report on the wages of first- and second-generation immigrants. According to this report, wages of first-gen immigrants have fallen significantly compared to non-immigrants: in 1940, the average 1st-gen immigrant made 6% more than the average non-immigrant (and 1.4% more in 1970), but, by 2000, the average 1st-gen immigrant made 20% less than the average non-immigrant. While 2nd-gen immigrants still tend to make more (6.3%) than non-immigrants, they used to make significantly more (14.6% more in 1970). The full report is here. The WSJ offers some more analysis.