Yeah, Canada's going to have to build their own wall, to keep out American refugees. I wonder if they can get America to pay for it?
Trump might as well build them both at the same time. Maybe he will outsource both of them to the Russians, who have some experience, but Ronald Reagan told them to "Tear down that wall," in an order he issued to Gorbachev, but by the time he issued the order, it was already pretty much demolished by the Kremlin, so it was kind of a silly order, but Reagan had forgotten that it was already gone because he had Alzheimer's; The Chinese have also built a dandy wall, but that was a while ago, and now it's just a tourist attraction. Trump will issue a bunch of one way permits for those who want to leave. And Trump will make the Canadians pay for it.
Walls do make a lot of sense, because nobody could ever climb over a wall. It just can't be done.