What substances are banned in many countries, but not even controlled in the USA?

For example:
Potassium bromate
https://en.wikipedia.org/wiki/Potassium_bromate
“Potassium bromate has been banned from use in food products in the European Union, Argentina, Brazil,[6] Canada, Nigeria, South Korea, Peru and some other countries. It was banned in Sri Lanka in 2001,[7] China in 2005,[citation needed] and India on 20 June 2016.[8]”

BHA and BHT
https://davidsuzuki.org/queen-of-green/dirty-dozen-bha-bht/

Edited.
It doesn’t have to be substances by the way.