[conservative in nyc]

I still don't see anything in the treaty prohibiting us from building a border fence. Please explain.

[TheLion]

Don't remember if you pinged this one....a long thread.

[ARealMothersSonForever]

it is stipulated that neither government will interpose any obstacle to the transit of persons and merchandise of both nations;

This also goes to the fact that passports are not required of USA and Mexican nationals. Mexico does not participate in the Visa Waiver Program. I think that is a bad thing, but it is how it is.