I read an article about US vs Mexico auto workers one time. It’s been a bit, so I’m “winging” the actual figures.
Basically, it boiled down to a US auto worker costing the company $40/hr by the time health care, retirement, and other benefits were figured in.
The same $40 would get a 60/hr workweek from a Mexican.
Actually the $40.00 figure is too low. Most line workers get paid almost that much.