Ask that your federal representative legislate against this sort of behaviour, and to give teeth to enforcement agencies.

Unscrupulous actors get away with this because there are few rules against it, and enforcement is non-existent. If a shipping company is sanctioned from entry into American ports based on misbehavior on the other side of the world, they'd have an incentive to clean up their act... Or at least, to subcontract everything to shell corporations.