That is confusing cause and effect. Because companies move their manufacturing operations to china it becomes harder to manufacture in the US. They did not initially move to China because of a lack of dometic skilled workers, but because of lower costs. The result of that move was, after a delay, the de-skilling of the US labor force, creating the lack of domestic skilled workers we have now. To recover from that would require a reverse migration of manufacturing activity which would, after a delay, create more skilled workers in the US.
Skills follow activity, they do not lead activity. You learn by doing.
If you want to develop good bridge building skills, then build a lot of bridges. As a result of that process, you will, after a delay, have a labor pool that knows how to do it well, and the bridges you build later on will be higher quality than the bridges you started out building.
You do not wait for the labor pool to sprout up like mushrooms spontaneously from the ground, so there are all these bridge builders standing around with nothing to do, and then you decide that you'll have them fill up a few rooms and and hire some of them to build a bridge.
It's not just a lack of domestic skilled workers. I'm not really sure there is much of a lack. It's just that US labor is so much more expensive compared to earning power. US workers can't pay other US workers.
Getting parts CNCed in China may be 10x less than the cost in the US, and materials are a tenth the cost as well (in small qty) as they haven't been transported yet. You can get roughly the same throughput in the US if you want to pay for it, but it will be vastly more expensive.
That is just logically false. It's not even a question of measurement, it is false by definition. The income paid to produce is by definition always sufficient to purchase the output that has been produced. But remember that income paid to the factors of production includes both labor and capital income, because both the owners of capital and the suppliers of labor purchase the products that are created by the combining of labor and capital to produce output.
What is unsustainable is running persistent trade deficits overseas. E.g. by allowing foreign capital inflows, we have allowed the foreign sector to distort prices in an unsustainable manner.
The buyer of US labor is the government and capital. Taxes on all US economic activity and coffers filled with worldwide profits are what purchases comparatively expensive US labor. This is why, e.g., most people can not afford new housing construction -- excess money has been dumped into it from the stimulus, driving costs up. Similar things have happened on a longer timescale for IT and engineering.
Take what I said with some restrictions, like "US workers can't afford skilled or semiskilled US labor" which is afaict true. I work in production automation, life sciences, and software; my hobby projects in these area are unfortunately quite expensive due to US labor costs. As much as possible I must avoid using US labor if I want to get anything done.
"Skills follow activity, they do not lead activity. You learn by doing."
Nicely put. Thanks for pointing that out. That really resonates for me as I think about my career and skillset. I'm where I am now because of building things with somewhat inferior skills (risky) at the start and growing my skills . I need to repeat that with new tools/processes now. It all seems obvious looking back.
...Perhaps another skill is having the foresight to see what will be needed in the next phase. I did it then, hopefully I'll be able to do it again. A bit like running a small company of one person. Where is the next investment made?
China - the populace - seem to be pretty good at this.
Skills follow activity, they do not lead activity. You learn by doing.
If you want to develop good bridge building skills, then build a lot of bridges. As a result of that process, you will, after a delay, have a labor pool that knows how to do it well, and the bridges you build later on will be higher quality than the bridges you started out building.
You do not wait for the labor pool to sprout up like mushrooms spontaneously from the ground, so there are all these bridge builders standing around with nothing to do, and then you decide that you'll have them fill up a few rooms and and hire some of them to build a bridge.