When high-tech "virtual" walls have been tried they've been miserable failures https://t.co/ExB6XIdX8K Meanwhile physical walls work in Israel, Hungary and lots of other countries https://t.co/dsLtT2IOoe Of course they can be augmented with tech. That's not the issue. https://t.co/96YqIgiGH6
— Mickey Kaus (@kausmickey) January 6, 2019
from Twitter https://twitter.com/kausmickey