Does it really matter? It's kind of a big data problem at the best case. How do you detect who is a smuggler and who is a just lost in the desert? Do you send

Does it really matter? It's kind of a big data problem at the best case. How do you detect who is a smuggler and who is a just lost in the desert? Do you send patrols to stop every single person? My intuition is that's cost prohibitive and an arms race with the cartels. They'll just get more sophisticated and buy off the drone operators.