In a recent article published in The Atlantic magazine, (American military historian Eliot) Cohen used a tongue-in-cheek approach to warn Americans against invading Canada, pointing out that previous attempts led to dismal results.

His review of American military failures starts in 1775, when U.S. troops invaded Quebec, where they distributed pamphlets — translated into French — awkwardly declaring: “You have been conquered into liberty.” The campaign ended in disastrous defeat for the American Continental Army in December 1775.

https://www.ctvnews.ca/canada/article/american-invasion-of-canada-would-spark-decades-long-insurgency-expert-predicts/