Apple bringing Mac production back to the USA in 2013?

In an interview with Bloomberg Businessweek, Apple CEO Tim Cook stated Apple would bring "some production" of its Mac models to the US.

"Next year we are going to bring some production to the U.S. on the Mac. We’ve been working on this for a long time, and we were getting closer to it. It will happen in 2013. We’re really proud of it. We could have quickly maybe done just assembly, but it’s broader because we wanted to do something more substantial. So we’ll literally invest over $100 million. This doesn’t mean that Apple will do it ourselves, but we’ll be working with people, and we’ll be investing our money."