Yes. An American shoe factory would be largely automated. If you think Americans are ever again going to have three bedroom houses and put their kids through college on manual labor jobs you are delusional.
If the neighbors of that still mill in this country demand it not pollute like that, how is it supposed to compete with a mill that has no such constraints?
Depends on who was there first. Move next to a shooting range and you can't complain about the noise. But if someone wants to build a shooting range next to you you have a case against them. Liability from pollution should work the same.
Again, you’re claiming that if I want to build a steel mill, I’m subject to the environmental concerns of my neighbors, while someone in China, if they have the favor of the Chinese Communist Party, can build a steel mill with no environmental protections at all, and my mill has to compete with the Chinese mill, even though the Chinese mill has a great cost advantage?