Is the reason why America is filled with illegal migrants (millions allowed till now) because the US power structure wants to decouple from China and will need cheap labour to work in onshore factory?
low cost, low overhead, no risks due to INS rounding up your people, and no tariffs due to NAFTA.
the reason they want the in the US is to work in services to keep costs down, because overall wages have not gone up and the costs of everything domestically needs to trend down -- and that means cheap labor.