Well that would depend on what you mean by “not working”. It seems like the US regulations are generally doing a good job of keeping toxic products out of the food supply.
I’m not sure if your claim is specifically around food colouring. If it is, I’ve not seen any compelling evidence that the food colouring allowed under US regulation is actually problematic for health.
I’m not sure if your claim is specifically around food colouring. If it is, I’ve not seen any compelling evidence that the food colouring allowed under US regulation is actually problematic for health.