The reason manufacturing jobs aren't coming back to the US is detailed pretty well here:http://www.nytimes.com/2012/01/22/business/apple-america-and-a-squeezed-middle-class.html?_r=3&hp=&pagewanted=all
[Apple executives say that going overseas, at this point, is their only option. One former executive described how the company relied upon a Chinese factory to revamp iPhone manufacturing just weeks before the device was due on shelves. Apple had redesigned the iPhone’s screen at the last minute, forcing an assembly line overhaul. New screens began arriving at the plant near midnight.
A foreman immediately roused 8,000 workers inside the company’s dormitories, according to the executive. Each employee was given a biscuit and a cup of tea, guided to a workstation and within half an hour started a 12-hour shift fitting glass screens into beveled frames. Within 96 hours, the plant was producing over 10,000 iPhones a day.
“The speed and flexibility is breathtaking,” the executive said. “There’s no American plant that can match that.”]