At this point, there are no plans to build the multimodal TTC 35 Corridor, only 4 lanes from south of San Antonio to north of DFW.
There is no effort to hide the fact that "[t]he corridor ultimately can be connected to a number of highway and rail facilities in Mexico."
There is no effort to hide the Kansas City Smart Port and the China connections. The web site reports on them.
There are open discussions about Oklahoma and beyond as well as the I-69 options.
So I don't see the problem. Both sides of the argument are right; to wit, there is no "NAFTA Superhighway" being built and there are plans to build a "NAFTA Superhighway."
It may take decades and it may not be called "NAFTA Superhighway."