THIS is how we should build the wall.
Dig a trench 100 feet deep. FILL it with old tires. Pile the tires up wide and high along the border. PILE them, do NOT "stack" them. It is extremely difficult to cross over a tire mountain. The wall would be 1/2 mile high, and a mile wide at the base.
Benefits:
1. There are already BILLIONS of discarded tires in piles all across America. These states would LOVE to get rid of them.
2. America discards 250 MILLION more tires every single year.
3. Discarded tires are FREE. Material costs would be absolutely ZERO.
4. A tire wall will look like a huge black mountain from a distance.
5. Graffiti proof, as no single surface is larger than a dinner platter. Graffiti would look like flowers from a distance.
6. Make it LEGAL to shoot at those who attempt to cross. Miss them? You just hit TIRES. No damage done. No repairs needed.
7. ZERO engineering needed. ZERO structure. Tires can be pushed around with dozers or air dropped from planes to build the wall. The DUMBEST prisoners can throw tires on top of tires.
8. Tire piles capture rain water, which will make the tire mountain a HAVEN for mosquitoes.
9. Populate the mountain with rodents and poisonous snakes. Those who try to cross are killed by the snakes. The fat rodents feed the snakes. The twitching corpses of the illegals feed the rodents. It is the PERFECT eco-system. The bones are left where they fall to create Hell on Earth.
10. There is NO LIMIT to the size of the mountain, as tire mountains do not require engineering. The stack can just keep on growing!
11. The Colorado River flows across the border into Mexico. We build a water pipeline along the American side, fed by the river. If they set the wall on fire, we CUT OFF their water supply for as long as it takes to extinguish the fire and divert 100% of the water to the fire. MEXICO will provide guards on their side to prevent illegals from setting the tires on fire, so they do not lose that vital water supply.
12. Tire mountains can be patrolled with snow cats and vehicles specifically designed to drive over such terrain.
13. You CANNOT tunnel through it or cut a hole through it.
14. We can pay Mexico ten cents per tire that THEY add to the wall along their side.
15. Tire walls are impervious to the weather, and deteriorate VERY slowly
16. Other fire prevention measures will also work. Remember the baking soda volcanos we made as children? Fly over a fire and bomb it with baking soda (CHEAP!) Follow behind with crop dusters spraying vinegar. The FOAM will extinguish the fires, and it is environmentally neutral. The rain will wash it back into the soil.
17. Toss in loose long coils of razor wire loosely strewn among the tires to make it even more treacherous to cross.
Can you imagine how DIFFICULT it would be for Jose, Maria, and little Pedro and Sonya to cross over this?!
Does anyone have a BETTER idea?
REALLY?
