Hollow points are banned in international warfare. Hollow points would be used against US civilian targets.
It’s handy that we have not declared war and are not fighting a signatory to any accords that I am aware of. In addition, we are not a signatory of those accords either.
In addition, I think using the same documents, the 50 cal. sniper rifle on human targets would be banned also.
Yes, by the first Hague Convention. Which the U.S. signed but never ratified. SOURCE.