A lot of Canada doesn’t have what you would call “infrastructure” until you’re well within range of the US Border. They’re also about equally insulated from foreign invasion and I think any US invasion that called for invading Canada first would be facing challenges that make invading Russia in the winter look like a pleasant stroll in the park.
Mexico is also about equally protected from foreign invasion. I guess their biggest threat would be us, and not without precedent, but they are not a threat to us. And just as Mexico is not a threat, neither are the nations south of Mexico a threat to Mexico. This was all true even in Lincoln’s time.
So, yeah, suicide it is. That includes any kind of internal fracturing.
Mexico is also about equally protected from foreign invasion. I guess their biggest threat would be us, and not without precedent, but they are not a threat to us. And just as Mexico is not a threat, neither are the nations south of Mexico a threat to Mexico. This was all true even in Lincoln’s time.
So, yeah, suicide it is. That includes any kind of internal fracturing.