You are wrong. The U.S. military decades ago defined an "Assault Rifle" as a carbine length rifle which fires an intermediate sized cartridge (between pistol and rifle length) and had fully automatic capability as well as a semi-automatic mode.
Care to post the link where any US armed force has that defined as their officially assigned terminology? I'm on .MIL (not at this moment) and can't find it anywhere.
Here is the post of the factual history of the terminology and you will not the federal govt has no part in it. Never mind the military.
Please post only facts and label your opinions as such.
http://en.wikipedia.org/wiki/Assault_weapon