Cobretti2 on 11 March 2016
Why build a wall when you have to maintain it?
There are other options worth considering:
1) Dig a big hole all the way across the border, fill it with acid. So any thing entering will decompose. Or better yet with motion sensors so if it detects movement big as flames start to burn (i.e. a firewall). Pretty sure the guys in Texas be happy to sell their oil for that cause.
2) Landmine field. Then run a national betting competition to win millions to see how many people get blown up in each sector trying to cross. Could become American' favourite pastime
