I take that back - I went to find that section of 418, and it addresses ground sensors but does not include unmanned aerial survelliance. I misread it.
However, that does not change the fact that when you post calls for violence against illegal border crossers, you play right into the hands of the La Raza types. Don't do it. The only way to win this battle is to get the GOP serious about border security. And you will not accomplish that by giving sound bytes to the other side.
Unfortunately, getting serious about border security is going to be a very expensive proposition; ground and airborne sensors will accomplish very little without adequate numbers of boots on the ground to effect arrests. And those boots cost $150K/year per pair.