Dramatic Shifts In Manufacturing Costs Are Driving Companies To US, Mexico
They're only interested in Southern or Southernized states, which is not representative of the US. That is, they're only interested in places with a well-defended "know thy place" mentality where labor is rendered servile.
Any deviance from said philosophy is severely punished, whether it be by individuals or corporations. In the case of individuals, it is measured in legally-friendly terminations, designed to break support. In the case of corporations, especially the precedent-setting Volkswagen, interest groups will threaten to take out tax incentives or otherwise hobble the company.