The author, Bret Stephens, eventually gets to the point... he is a daca supporter.
https://www.nytimes.com/2017/06/16/opinion/only-mass-deportation-can-save-america.html?_r=1
First, I question his statistics. What are the actual numbers, and where did he get them?
Second, he makes no allowance for race, social or economic status. Divide his categories on those parameters and the results would not look the same.
Third, as the son of a father whose family has been in Maryland for 300 years, and a mother whose parents were foreign-born, how would he classify me, and those like me? Am I a child of immigrants (well, grand-child), or the scion of an old nativist line (may even be some Native America Indians in that line, too)?
Apparently, so is Donald Trump.