It wasn't the Geneva convention, it was the Hague convention of 1899 prohibits the use of bullets that flatten easily in the human body. The US governments interpretation of the Hague is that hollow points are legal when used against terrorist operations-- When not involving the engagement of armed forces of another state.
So the short answer is yes they are for us. But can you blame them they know they are going against ar-15's with a 30 round mag stuffed with hollow points. They don't want to be out gunned.
In close quarters I'd rather use a Saiga 12 with a 10 round clip and some serious home defense ammo. One and done!