It will be worse than you know, the Somalis will be the first to move south. After the free money ends, they will seek it here. Probably using illegal methods as we will never pay them to come. The rest of Canada's trash will follow for the same reasons, the few people with the actual means to do so will probably go to Europe, the poor will revert back to hunting, fishing and forgoing to try and survive, most will fail, those skills take decades to learn, and they will starve. Our leftist drones will be the ones that demand we save their northern cousins, and the right will ask for a secure border. It should not fall to the USA to save people that spent decades destroying their own future
Canda will fall soon; how much it will hurt us is the real question.