Ok, being generous and accepting your point at face value ....
What about the people staffing those manufacturing cities ? Is the state creating them too ?
I seem to recall reading somewhere that – at most – the US could "find" 200,000 people for new manufacturing plants.
Sounds about right to me, no ?
I think even with a generous mind the US would struggle to "find" much more than that, let alone getting to or exceeding 1 million which is the value you would need for seriously thinking about >1 manufacturing city.
And willing to work long hours at the minimum-wage rates required for US-based manufacturing ....
P.S. 18-25 and 54+ ... its actually 16–25 and 54+ I don't think you'll find many 16–18 year olds biting your arm off for a job in manufacturing either...
Chinese-scale manufacturing cities in the US at $36/hr ? Yeah, that ... ain't happening.
and there isnt a lack of people that would accept working in one of said manufacturing towns for 10 years or something to get US citizenship?
If manufacturing was a serious problem, the US could definitely solve that problem too.