Some examples of Canadians thinking they're Americans include the Convoy on the Canadian right larping as right wing Americans, and the "assault weapons ban" on the Canadian left larping as American Democrats.
Both of which aimed to solve for problems faced by Americans in America by doing something in Canada, when the same problems don't apply to Canada.
Well to be fair, most of that LARPing is being done by our PM who likes to piggyback on the cache of big American news stories. That's seen by many of us as being ridiculous.
How about our Prime Minister LARPing as a Democrat and spending a ton of money on a school lunch program that as far as I can tell (being an avid consumer of news across the country’s political spectrum) no one has ever suggested was an issue north of the border? At a time when we are already ludicrously overspending, no less.
Both of which aimed to solve for problems faced by Americans in America by doing something in Canada, when the same problems don't apply to Canada.