Even though I find the arguments brought forth by everyone interesting, this discussion has veered away from the original question. Here is my question/answer in regards to the original post: how do you restrict/regulate something that is completely passive and only good for defensive protection without the possibility of harming another? For all intents and purposes wearing too many articles of heavy clothing coiuld be considered body armor, since wearing a heavy winter coat over a jean jacket and sweatshirt, etc.. might stop a 22 or 38 spl. Would metal buttons on clothing be illegal too or would they only be illegal if they were of a certain gauge and covered a certain percentage of area? And would this ban extend to armored vehicles as well? I know that essentially this is talking things ad absurdum, but I find that to be the best way of thinking about questions posed to me.