First graph in your link
It turns out, however, that the newer immigrants are not assimilating quite as rapidly as earlier waves. Here’s the table from the report that documents the slowdown of assimilation:
(Table wouldn't link)
This table reports the percent difference in wages between specific immigrant waves and natives at different points in time. The data obviously show a lot of wage growth for immigrants who arrived in the 1960s and 1970s, but far less for immigrants who arrived in the 1980s and 1990s.
In this piece the author also considers generational costs for illegal immigrants. What? The 2nd and 3rd generation would not be illegal as they were born here.
That whole piece is simply fun with numbers.
I agree with that. They can be manipulated to suit anyone's position. No one really knows the cost or lack of it.