Boeing has farmed out work over the years, for various reasons. Sometimes a sale to a State-owned airline, such as China, hinges on some of the work being thrown their way.
Sometimes it's a special project, like modifications to an existing aircraft in a small quantity (the 767 tanker and the 747 large cargo aircraft are examples).
But the majority of their planes were always made in the USA, until now. The majority of the 787 will be made overseas, on the order of 70-80%. With their new transport, they can farm out large assemblies, even entire fuselage sections. I expect this trend to accelerate.
If you don't see it, you are the one who's clueless.
I laugh when I hear someone say "If it's not Boeing, I'm not going!" Well, guess what? It's not Boeing.
Boeing.com states on the 787 Program Fact Sheet ...
US and non-US content on the 787
Roughly 75 percent US
Roughly 25 percent non-US
I've wondered about the definition of 'content'.