NM only has 2 minor border crossings with Mexico. While illegals don’t use border crossings, they do use the roads in Mexico that lead to the border crossings to get close to the border. They generally do not in large numbers trudge across the uninhabited desert on either side of the border. This means that even a modest extension of the border wall around the major border crossings would stop the majority of the illegals.
Interesting. I did not know that. That explains a lot. So basically Arizona and Commiefornia need to close off their borders and the problem is solved. But of course, good luck getting them to do that.