Poverty wages, child labor, ignoring emissions regulations, evading taxes, etc are all ways a company could improve margins and charge lower prices. That doesn't mean you want to legalize all of that just to compete in the global market.
It's ultimately going to be a race to the bottom if you allow companies who engage in those practices all over the world into your market on even terms. That's honestly what tariffs are for. Tax your citizens for engaging in commerce with companies that gain efficiencies through operating in ways that disagree with local values.
Couldn’t you use the same line of argument for tariffs on a vast number of imports? (Electronics, software, services, etc.)
It could even extend to most consumer product. e.g. Some obscure chemical compound for plastics is much more costly to produce in an environmentally friendly way, therefore it’s nearly all produced in the least regulated jurisdictions, therefore the compound and all derivative products have to be tariffed from those jurisdictions?
Why do you put words in my mouth that we should legalize something when I said nothing of the kind? If this is how you react when someone points out flaws with a legislative approach then good luck ever getting one that isn't flawed.