‘Government did us in,” says Dwayne Madigan, whose job will terminate when General Electric closes one its factory next July. Madigan makes a product that will soon be illegal to sell in the U.S.: a regular incandescent bulb. Two years ago, his employer, GE, lobbied in favor of the law that will outlaw the bulbs. Madigan’s colleagues, waiting for their evening shift to begin, all know that GE is replacing the incandescent for now with compact fluorescents bulbs, which GE manufactures in China. Last month, GE announced it will close the Winchester Bulb Plant 80 miles west of Washington, D.C.,...