Unfortunately there are countries that don't care about your regulations. I'm not even sure a regulation like that can pass in most western countries.
https://www.unog.ch/80256EE600585943/(httpPages)/F027DAA4966...
It would likely pass and be agreed to easily just like treaties on mines, chemical and biological weapons.
Seeing how the US has yet to sign the Ottawa treaty I wouldn't call it easily agreed on by any means.