The wage gap between dropouts and high school graduates has remained nearly constant since 1980, despite supply pressure from immigration and the rise of other education-related wage gaps. Overall, evidence that immigrants have harmed the opportunities of less educated natives is scant. http://www.nber.org/papers/w11547

Post-1965 immigrants are doing reasonably well with assimilation. Second generation sons and daughters have higher education and wages than the children of natives. Even children of the least-educated immigrant origin groups have closed most of the education gap with the children of natives. http://www.nber.org/papers/w11547