If America actually decide to physically ban the import of Chinese goods, most especially from Foxconn (who assembles a lot of iThings as well), things will be getting really interesting.
Whose products will the US of A then use? They'll have to produce their own - which means no more outsourcing to "cheaper" firms beyond the US of A's borders - or they'll do all sort of shenanigans to ship their products out, get these assembled, and get it shipped back.... or "import" workers on a short-term contract basis to do the work....
Biting the hand that feeds IT
