Hmm, perhaps the benefit of illegal immigration, keep costs low by providing no medicare, employment insurance, etc.
I believe the real reason is not that "chinese wages were low" . and "not now" !!
It's because USA does not need chinese coal anymore ... they got shale gas.
China still produces 50% of the world's coal ... polluting itself to death, in a way "Death of China" was at play.
Should be a happy repreive for chinese people .. if USA stops buying from them. It will reduce pollution (assuming, less coal will be burnt in china).
If not, its "Death of China" which will continue to play.