Just to chime in, US factory workers get paid much more than $12 an hour. Try $20+. This also holds true to any distribution center, non-con assembly line, and R+D facilities with no WIP.
That's going to vary on location and whether unionized or not. Starting pay in unionized detroit plants is now well under $20/hr to something more reasonable. $20/hr to work an assembly is insane and why those jobs went overseas to start with.