I’d add a third - high IQ and/or bringing a lot of their own $$. No reason to bring over a 70 IQ Somali even if he/she is willing to assimilate.
You folks are dead on. The left doesn’t look at the issue of dead wood immigrants. 1880’s influx had a 30% return rate-couldn’t hack it. Would the left buy into it? Their motives are different.