With all our technology, we can’t come up with a better plan? Night vision, videos, etc.
You would think so. I don’t know the answers for this problem but I know we have to do something asap. IMHO it should have been taken care of many years ago....
On the other hand, IMO, we should just conquer Mexico, slaughter and behead drug lords, and reduce the white ruling class to the poor beggars, and make Mexico a place their people want to stay in.