The US is becoming toxic to have heavy industry factories in.
The clearest example of this has been Boeings problems opening its South Carolina plant.
They have broken no laws, but the Obama administration has buried them under frivolous lawsuits and complaints in support of the big unions funding his reelection campaign. Boeing made legitimate and legal business decisions to open that plant and the Obama administration has yet to prove differently.
Thousands of jobs were being held up until Boeing defied the National Labor Relations Boards threats and opened the plant in 2010. Lacking evidence of wrong doing the feds have done nothing, but they did hold up thousands of jobs for over a year.
Another example is Bucyrus International of Wisconsin. They lost a $200 million order from a company India for coal mining equipment in 2010 because the US Export-Import bank blocked the sale. The loss of the sale prevented a factory from being reopened.
The sale was blocked because a bureaucratic regulation, not a law, said that a US company could not do business with a foreign company that caused greenhouse gasses to be created. A Japanese firm got the sale after the Ex-Im Bank decision.