immigrants from underdeveloped countries who lacked education and worked manual jobs Why are you conflating immigrants from underdeveloped countries with low i

immigrants from underdeveloped countries who lacked education and worked manual jobs Why are you conflating immigrants from underdeveloped countries with low intelligence? The parents could be have been (likely were) highly intelligent, just lacking the opportunity or access to education. The current US PhD's that are the children/grandchildren of immigrants aren't a random selection, they are the product of smart motivated parents working the system (immigration system, education system, admissions system) for and with their children. The core fallacy of Eugenics is not that intelligence is heritable, it is that you can avoid terrible moral hazards when you try to meddle in this stuff.