Why are you afraid to change the laws? Do you live in a nice safe place, unwilling to support our troops?
Because no law change is needed. The problem here is not the law, it is that politically correct, politically driven “leaders” are earnestly listening to any enemy who alleges any crime. They place the presumption of wrongdoing improperly on our men, not on a proven murderous butcher.
And they do it to placate naive people who sit around whining that soldiers should act like gentlemen, and that brutality should fit into legal niceties.
By your standard, half the USMC and US paratroopers in WWII should be prosecuted.