Here are some recent survey data on the makeup of the immigrant population in the US.
A lot of interesting material here we might discuss. I’ll just limit myself to pointing out one fact, which is discussed by Borjas as well: immigrants are, as a group, less likely than non-immigrants to have some college or a college degree (63% non-immigrants vs. 50% immigrants) and they are much more likely than non-immigrants to have less than a high school education (27% immigrants vs. 9% non-immigrants). The latter point is true for every single regional group of immigrants Pew provides. In other words, no matter where immigrants come from, whether Asia, or the Middle East, or Sub-Saharan Africa, or Europe, or Central and South America, they are more likely than non-immigrant Americans to have less than a high school education.
What do you think the likely long-term consequences of such demographic facts might be? Do those or any other facts in these data seem to you convincing parts of an argument against current immigration policy in the US? Do any facts here seem to you convincing parts of an argument for current immigration policy in the US?