I'll take a stab at the last part.
First, it's very difficult to trace back. In my experience, going back to China, they'll set up shops, and their whole goal is to mix counterfeit products into the distribution network. We're training and working with the major retailers to identify counterfeits and trace them back, but a lot of the time it goes back to trading companies and some of the factories. There are factories that produce counterfeits on a midnight shift, and there are factories down the road. A lot of mixing and matching goes on. Then there are legitimate counterfeiters who get into problems such as with the breakers.
When you have a Katrina disaster, Red River floods, and all those areas where they have a need for a big supply of products, with the just-in-time manufacturing and the lack of holding stock, it's perfect for counterfeits.
It's very difficult to actually trace it back, and the sources dry up quickly. Law enforcement is used along with private industries to try to correlate it, but it's an expensive and a difficult task to zero in on.