Or, as it turns out, from within. (Looking at you, Danielle Smith).
But yes you're right. The only times we've been invaded were from that direction.
But yes you're right. The only times we've been invaded were from that direction.
Looked it up:
4 Times the U.S. Invaded Canada
https://www.mentalfloss.com/history/war/4-times-us-invaded-c...
Pretty sure that's a prong of the southern strategy.