You should be safe!
Two reasons you should be safe 1. you are in the United States regardless of your shot you were not in Canada, and you were within the law from the ground you stood upon. 2. Canada bans any one from Open Carrying anything so the man would have been breaking the law in the first place, and if he was drunk would have been in a double violation. Canada would make a huge stink out of it, you would have some fine to pay before you went to Canada again, and you would have a huge legal fee to have a lawyer deal with it in Canada, but nothing serious would happen to you. Having not been in violation of US law would mean you are entitled to the protections of a Citizen of the United States. You can not be extradited when you did not leave the country in the first place, there are many ways this can be argued but in the long run it would make a hell of a media firestorm, and then it would all go away after a while, either the media would get over it, or Canada would deal with you out of court in a fine that was kept from the media. so no issues there.
Also there was just a shooting of this nature in Peace Arch park technically it was a cross border shooting resulting in one death yet it has made very little note even in local news, so I suppose it depends on the case, and would be a case by case basis. I wonder do you get looks from the Canadians when you are walking around with it OC
I would love to see the reaction of some Maple Leaf lovers
