I’m not sure the effect of ESL class funding on government sponsored adult education. What you say is likely that given limited government budgets. That said, a large immigration population in a particular town or city represents a large source of tax revenue (especially if they’re legal). These taxes can go to pay for additional classes (and other services). Also, if there’s demand for courses, there’s nothing stopping private companies from providing these services, too.

1. If the net effect for the country as a whole is zero, what is the point of organizing a national policy to promote it?

2. The effects are not just in labor. I had a revelation just this month when I discovered that most of the Adult Education programs I remembered had been discontinued because more and more funds were needed to finance ESL and Citizenship Prep courses. The deterioration of life for native born citizens is routinely ignored by those who are convinced that unrestricted low-skilled immigration must be a good thing and that anyone who questions it is just racist.

You are trying to argue that immigration particularly illegal does not contribute.

I don’t think you are really taking into account how negative the existing situation is.
Try wandering through a northern industrial ghetto, like those I grew up next o. There used
to be jobs, now there aren’t. Black male unemployment has increased.

My observation is that black males in the lower tiers of the workforce have suffered a lot from competition from illegals. They don’t ‘move’. They become unemployed.

Many of the jobs the illegals so eagerly do – janitor, gardener, in my youth were done by black men.