Re:Sigh, perspective, etc.
As an ex-pat USAian living in Germany for a while now, I can assure you that non-patrolled land borders aren't a problem. Looking at the case you so handily provided, the problem with the right to bear arms is immediately evident. Criminals will steal the guns they need, they do not need to go through background checks, because you, the arm bearing, law abiding citizen continue to provide them with the 'tools of the trade'.