Amusingly Engels predicted this very scenario

Here one sees how necessary the feverish speculative spirit of the Americans is for the rapid development of a new country (if capitalist production is taken as a basis); and in ten years this sleepy Canada will be ripe for annexation — the farmers in Manitoba, etc., will demand it themselves. Besides, the country is half-annexed already socially — hotels, newspapers, advertising, etc., all on the American pattern. And they may tug and resist as much as they like; the economic necessity of an infusion of Yankee blood will have its way and abolish this ridiculous boundary line — and when the time comes, John Bull will say “Amen” to the matter.

https://www.marxists.org/archive/marx/works/1888/letters/88_09_10.htm