The problem with issuing JHPs for use against terrorists is that you can never control whether your next encounter will definitely be against unlawful combatants. It creates yet another logistical burden (as well as legal trap) to track yet another type of ammo. By not stocking JHPs, the military can state emphatically that none of the wounds in a claimed collateral damage encounter are the result of "ammunition designed to maim or cause undue suffering". No one caught with suspect ammo can claim it was issued to him/her by mistake.