[KarlInOhio]

One thing I have not seen in all of the leftist ranting about this is questioning whether the IQ difference comes from self-selection among the population of immigrants. For example, are the Mexicans who are most likely to pick up and move to the US for jobs in landscaping, construction and housekeeping on the low end of the IQs in their home, while the Mexican doctors, lawyers and managers are doing pretty well and not interested in tramping through the desert to get here?

[babygene]

“One thing I have not seen in all of the leftist ranting about this is questioning whether the IQ difference comes from self-selection among the population of immigrants. “

The reason is irrelevant it seems to me. The end result is what matters. BTW, it’s well established that people from different ethnic groups do have different average IQ’s.