Who’s going to want to work in Mexico, a crime-ridden country,and where, if you are employed, you have money, and that money invites criminals.
Relationship with Mexico is going downhill, with the border crisis and the fentanyl crisis and where control of the government is by the criminal cartes.
That battery factory may get closed as soon as it’s built.
You do realize that GM and Toyota and several other auto companies have been making vehicles in Mexico for 25+ years.
Every since NAFTA.
The Tesla factory in Mexico will by built and operated by local workers. There may be a few supervisors and engineers from the U.S but I doubt that would be a large number. I would think that one of the main reasons to build a factory in Mexico would be to take advantage of very capable Mexican labor.