It's not going to keep foreigners out... It is so tough for me to get how anyone would think that. Let's forget for a second that the majority of illegals come through the port of entry and simply overstay their visas. The wall they're currently planning on building can be overcome manually with sawing wire. A paraplegic could get through it without assistance. The wall that they wanted to build... you'd need to bring a rope.

Meanwhile: drones are dirt cheap, surveillance equipment is dirt cheap. Maga tards will virtually work for free if you give them a Hummer and a badge. There are so many better solutions than a wall.