Immigrants like Arnold can't come. The elites want a semi-slave underclass that will never get ahead because they fail to teach them English and keep them impoverished with intentionally-family destroying government programs.
This way they can staff the factories at the lowest cost, get their lawns cut, clothes washed, and food served -- all on the cheap.
The only exception are technical trades (engineers, doctors, etc). They are imported so that these skilled wages are deflated and the middle class cannot reach the upper class by means of merit and hard work.