well, who's to say that the '34 law wasn't the impetus for the other crap that followed?
in other words, if i could really turn back time (repealing a law is not turning back time), i'd ix-nay the '34 law. cooler heads will have prevailed. as soon as prohibition was repealed those evil machine guns weren't so popular once there wasn't a reason to go gunning people down in the street. and there wouldn't have been this huge cry to ban guns.
but while we're re-writing history. Roosevelt does NOT get elected. not even that first time, let alone the 3 times afterwards. can we say "american father of socialism" class?