For those who doesn't know the papers involved that you need to keep on you include, your passport and also your labor certification. A big letter sized paper that is both important and not in any way protected from wear and tear. All in all pretty hard to keep on your at all times for 3 years without destroying them in the process. How would you go running for instance?
I know the rule that in any argument where you invoke the name of Hitler you automatically lose the argument, but this is pretty scarily close to WW2 Germany isn't it? Land of the free indeed?