He's right
I'd rather see a Texmex Canal stretching from San Diego to the Gulf of Mexico. 3 miles wide, cable of hauling ships in both directions and then charge shipping companies a toll fee to use it.
If Ancient Egyptions can build pyramids, we can build this canal. It just takes will power.
While I like the idea, it also takes something else rather important... Water. This is something in short supply in many areas of the border these days because mexico has been siphoning off so much of the Rio Grande in direct contravention of several treaties we have with them. Of cours, since mexico is a criminal enterprise, we don't really expect them to keep to the terms of treaties.