Google has photos of the border fence.
From high above, but still ... and they are commercial.
Just go to this link and look at the northbound traffic. That’s money headed north, and there is no will to stop it from either political party:
https://www.google.com/maps/@27.5009596,-99.5023212,470m/data=!3m1!1e
24 hours a day, 7 days a week they come north....