Politicians say a lot of things. And as Clausewitz said, war is politics by other means. There is no world in which Canada resists even a limited American assault in the near term.
US in the south, and Russia in the arctic.
Saskatoon / greater SK is the 2nd largest supplier of uranium in the world, and most US nuclear weapons + plants are running on Canadian hot rocks.
creating medium range missile would be trivial for Canada in terms of resources and technological / engineering skill-sets in country. not a far flight from upper QC to NYC, or from upper Nunavut to Petrograd
“ Despite the declaration of peaceful use, from 1955 to 1985, Chalk River facilities supplied about 254.2 kilograms (560 lb) of plutonium, in the form of spent reactor fuel, to the U.S. Department of Energy to be used in the production of nuclear weapons.[3] (The bomb dropped on Nagasaki, Japan, used about 6.4 kilograms (14 lb) of plutonium.)”
Of course there is [1]. (It's exorbitantly more valuable as a civilisation. I would have thought this parenthetical too obvious to be worth mentioning a few years ago.)