Somewhat on topic...... the large scale erosion of the manufacturing base is also a driver (one that the politicians, of course, won't talk about) of kwh rates going up - you are amortizing the same and growing grid infrastructure costs over less total consumption.....
Much less on topic (sorry OP)..... many corporations won't bother upgrading manufacturing facilities here, when there is readily available low cost/slave/child labour on the other side of the planet...... not having to worry about any environmental/health/safety/human rights legislation adds up to a huge incentive (straight to the bottom line) to ship factories overseas........ all of which was put in motion 40+ years ago......
What goes round comes round...... in one form or another, a lot of the pollution we "exported" is ending up back in N. America.
Rgds, D.