I'd say put up a security fence but the pacifist Canucks are too busy with drugs and same-sex marriages to be much of a threat. After all, TEN out of TEN terrorists PREFER vacations in Canada over anywhere else. Much be the HUGH amount of frogs in Queerbait-a-bec or maybe, the jihadist's hiding out in Toronto or Montreal.
Canada is a piss-ant country with a massive inferiority complex. They envy us, but they have to hate us because otherwise there is nothing that differentiates them from us. Canada, on the world stage, is irrelevant. Not a player, and isn't going to be. Ignore them. Just make sure Homeland Security is well funded to keep arab terrorists in Toronto and Montreal, not in the US.