We are facing the end of 'the West'. Some of our best science shows the US empire is following the collapse-path of the USSR - but this is also the precursor to the emergence of a new life-cycle for civilisation.
Canada is suffering from internal division as well, especially if a massive influx of American refugees arrive (which the Canadian government will not be prepared for). Additionally I doubt Mexico can win a war against Texas especially considering their instability.
I get dividing the US after a civil war. But Canada?
And MAYBE Texas on it’s own would not last long until Mexico “reclaims” it.
Canada is suffering from internal division as well, especially if a massive influx of American refugees arrive (which the Canadian government will not be prepared for). Additionally I doubt Mexico can win a war against Texas especially considering their instability.