> You seem to have a few of your own: "Canada only has to patrol its northern border"
the Canadians do not aggressively patrol the southern border because that is where all of the people are -- unlike the north -- and because the reality is that the entire Canadian military is basically a speedbump for if/when the US invaded in earnest.
Americans: X country is only a speed bump for our awesome military.
Also Americans: Have never managed to win a single war on their own while usually fighting underdeveloped tribes whose most advanced equipment is sandals, while at the same time both allies and enemies have a billion jokes on how bad they actually are.
You need a special kind of personality to be this confident while currently losing a war, one that is, well, associated with Americans.
the Canadians do not aggressively patrol the southern border because that is where all of the people are -- unlike the north -- and because the reality is that the entire Canadian military is basically a speedbump for if/when the US invaded in earnest.