Canada -

[Immortal Technique]

What if USA starting escorting any South American caravans to Canada's borders? How do you think they would react without the USA being the buffer? The major of what they love is at the cost of America suffering from being attached to Mexico. How much do you think their views would change if we provided a Mexico to Canada pathway through the US?

 

[Inventor of the Telephone]

The northern border is even less defended than the wide-open southern border. You've not thought this through.

 

[TFT-A9]

The northern border is even less defended than the wide-open southern border. You've not thought this through.

Canada's got more gibs than us. I think OP is on to something.