![bigstock-Auto-Industry-8566_0+%281%29.jpg](/proxy.php?image=http%3A%2F%2Fwww.newgeography.com%2Ffiles%2Fimagecache%2FChart_Story_Inset%2Fbigstock-Auto-Industry-8566_0%2B%25281%2529.jpg&hash=f45726d0754620ea4cf0ac6b0eb41c7f)
While this is an interesting piece, I don't see any correlations between right-to-work states and those with strict environmental regulations along with general incentives to locate there via tax breaks. It does however provide an insight into a changing trend.
Read more @ The Cities Leading A U.S. Manufacturing Revival Newgeography.com