If those "...talented software developers and scientists, with multiple higher degrees and PhDs..." were "...single mother from Central America..." that were coming in illegally, going on public assistance and would be voting left to keep those benefits coming, the left would welcome them with open arms.
Illegals are already a big boost for the left by increasing the number of blue house seats, and the whole idea of "comprehensive immigration reform" is to get them voting.
I understand how allowing illegals flood into the country helps the rich and the "credentialed" class, but it does so on the backs of the poor and middle class.
If you want to have an honest discussion, please explain how I am wrong.