We will build a great wall along the southern border. And Mexico will pay for the wall. Believe me. Hundred percent. They don’t know it yet, but they’re going to pay for the wall. And they’re great people and great leaders, but they’re going to pay for the wall. On day one we will begin working on an impenetrable, physical, tall, powerful, beautiful southern border wall. We will use the best technology, including above and below ground sensors, that’s the tunnels. Remember that above and below. [ makes hand gesture ] Above and below ground sensors. Towers, aerial surveillance and manpower to supplement the wall, find and dislocate tunnels and keep out criminal cartels and Mexico, you know that, will work with us. I really believe it. Mexico will work with us.

[Phoenix, AZ, 8/31/16]