This is really not complicated. We all know Canada will not attack USA militarily. What Canada is doing is killing Aluminum and steel industries in US. And that is the security threat. No war is possible to win if we have to depend on imports of steel & Aluminum.
>>>No war is possible to win if we have to depend on imports of steel & Aluminum.
Don’t forget oil. Time to put a tariff on all that oil coming in through the Keystone pipeline.