The EPA and the FDA ensure that you can't have a state decide that "workers in the sausage" is acceptable, then sell cannibal sausage to states with laws that protect workers and consumers, or to protect you from a state deciding that all of that benzene flowing into the river is YOUR state's problem.

If you can't see this because you believe "why would someone do evil?" Then you are hopelessly naive or intentionally pushing a bad take.