alt Hacker NewsThat talks about how they couldn't find someone US side to make the injection moulding moulds. We used to have a manufacturing business in the UK and got quotes for some moulds in the 1980s. You could get it done in the UK but the cost to get it from China was 1/5 as much. I guess people just went with the cheaper option.
You can still get molds made in the USA, but they are indeed much more expensive than an equivalent one made in PRoC, and options/expertise are often more limited or specialized (depending on how you look at it). It is very difficult, but not impossible to make consumer products in the USA.