The border control actually started with infared cameras and sensors in the 90’s and then switched to walls! Very likely infared and sensors have improved a lot and 90’s was too early for those technologies but when I read the article it was like “what? They didn’t start with a wall they started with infared and sensors?!?”A wall may not be the best way to secure the border. Democrats want to secure the border. They just don't want to waste billions on an ineffective solution.