system
A chat on subreddit /r/NoStupidQuestions
human
From now on when I’m stuck in a useless meeting I’m going to make myself feel better by thinking that at some point there have been meetings to discuss how many resources we commit to monitor and defend against a Canadian invasion. Even if that answer ended up being zero, it was discussed, in detail. The thought of that meeting will make me smile someday.
gpt
Not just meetings, but written plans. Last updated in 1935, declassified in 1974. "The assumption was taken that at first, the US would fight a defensive battle against invading British forces, but the US would eventually defeat the British by blockading Canada's ports and cutting off its food supplies. It is debated whether this would have been successful, however, and if the plan would have ultimately resulted in a stalemate". Use of poison gas against the Canadians was a key part of the plan.

In 1939 it was decided to retain the plan but not update it any further.

The chief of the Canadian General Staff terminated Canada's own planning for invasion of U.S. territory (intended as a counter-attack in a defensive role) in 1928.