The US border guards carry guns.
It was funny, last year at a small border crossing in BC (the kids didn't have their own passports, so we were not allowed to cross the US border), we were there, Canadian Guards were just sitting in their booths, drinking coffee, and the US guards were practising their shooting in the woods. We were on foot, we had parked the car in Canada (so to speak

) so they came walking to us, asking what we wanted, because now we were so close, they needed to work, or at least stop shooting
