You think there is regulation but congress has defunded all inspection so it barely happens.
That fertilizer plant that exploded was last inspected in the EIGHTIES.
It's just that lawsuits are easier in the USA so that might cause food manufacturers to behave better.
Plus I am starting to see food and supplements now made/grown in China on the shelves in the USA. So how much regulation you think each batch gets? I'd guess something close to zero.
But when congress needs to fly home, well then they will fund things like air-traffic controllers so they do not have to wait on the tarmac like everyone else.