Looks like only on trade, commerce, energy, air space and other clerical and operational differences between the countries and trying to align them. We do need to form cooperation among the North American countries for better trade, security and defense. Why not?
“Why not?”
If you want open borders, which is what this President and Senate are working feverishly, and behind closed doors to achieve, then you must not have a problem with it.
It’s the equivalent of the EU.
Just look at their immigration, and terrorism, problems.