all the "low-skill" people would be able to move to the city and find a job

That this doesn't work is self-evident. Cities are currently filled with low skilled people. The vast majority of whom find no employment or employment in illegal activities.

Also:

We don't need more high-quality education

The idea that the world, and the US in particular, has no need for more and better education is laughable. Considering the fact that a lack of education is, arguably, what got the US into the current situation in the first place.