We 'allow' imports from China because they offered to supply them cheaper, and once we had burned our bridges and HAD limited other options, some of them decided that quality could be varied. The problem of inspecting and enforcing standards in a county like China is beyond monumental.
If your shoes don't seem to 'quite' fit like you want, that's a nuisance...when the games are played with drugs, food products and paint on children's toys, it gets serious.

I can't forsee any long term solution besides reversing the trend and beginning to rebuild our own production facilities and scaring China into some serious monitoring if they want to keep ANY business.