Humans climb walls and they dig tunnels. I’m anti-wall and pro-migration. I recognize the need for immigrant (cheap) labor so prices remain affordable in grocery stores, restaurants etc. If people insist on keeping people South of the border out, we’re better off with maintaining what’s already there, building more infrastructure(how about roads since its the desert ) & increasing the use of technology like drones to monitor movement along the border. It would cost THE TAXPAYERS a lot less money and be more effective.