I never understood this hysteria about possible 3D printed guns in america where every fucking idiot can get a firearm. If this would be where I live (an EU mem

I never understood this hysteria about possible 3D printed guns in america where every fucking idiot can get a firearm. If this would be where I live (an EU member country) were getting a gun licence needs a very good reason is hard to get (thank god) and the police can enforce that you keep your gun locked away and such, I would understand that there would be a law like this. But in the US?