The US lacks effective regulation and the precautionary principle with respect to chemical safety, agriculture, and food safety. Food safety in the US is mostly regulated by the FDA but it is grossly underfunded, understaffed, aspirational, and ultimately laughable. Largely the only ways consumers can protect themselves is by not buying toxic chemicals and avoiding non-organic foods because there is systemic pollution in the supply chain and a lack of safety standards for chemicals.
Making sweeping statements like “The US lacks effective regulation and the precautionary principle with respect to chemical safety, agriculture, and food safety.” tells me nothing other than your opinion.