Yes we need the wall to help protect America. Use it along with the wall, technology, but just technology will not work alone. A drone can see what is coming, it they can be shot down and they can’t stop or protect our agents when hundreds of illegals rush the boarder like they did twice now. It was the wall that stopped them. Sensors can detect where they are or when there is a hole under ground, it again will not stop hundreds rushing the boarder at once. And this will be Mexico paying for the wall.