I don't know about the rest of Apple's lines but the Mac Pros (the round trash can looking things, lol) have been made in a factory by their Americas Operations Center here in Austin for about a year now. The factory making the Macs here in Austin is actually Flextronics, and not Apple. Also most of the guts of their computers are now being done in the Samsung factory down the street from there. That new Samsung factory is HUGE! A lot bigger than the one making Apple's computers. It pretty much dwarfs all the other business in Austin except IBM and Dell.You're thinking of Apple... Just this year they've announced that they are thinking about moving a tiny portion of their manufacturing on-shore... As in Back to US soil.
Other than the part about making Windows 8, that is.