We all know how they reacted, so there is no need for hypotheticals that serve no purpose. And in the last 9 months the US has made multiple strong suggestions that they think that Canada should 'join' the US (by hook, crook, or force) and they've threatened to annex Greenland (similarly) and are currently in the process of setting up a military offensive against Venezuela.
We don't need fairytales, we have history and present day events to guide us.
Okay, but then what point are you attempting to make? You are arguing against the comparison, but then go on to describe other aggressive acts instead. As though to seethe, "it's not an apple, it's a fruit!"