The fact that the boarder is huge does not mean that monitoring it is not necessary or that it is impossible. The fact that tunnels exist doesn't either. We have the technology to detect tunnels and tunneling.
The fact that people sneak past at busy check points doesn't
make the situation not worth trying to address.
Every area where a person could cross can and should be monitored. Walls, cameras, drones, satellites, sensors, and guards are all valid tools for border protection. The question just comes down to where and how they are deployed and maintained.
> The bigger question though is whether other approaches besides just trying to catch and stop people could be better.
No one so far has managed to come up with an anything better. Have you?
Every area where a person could cross can and should be monitored. Walls, cameras, drones, satellites, sensors, and guards are all valid tools for border protection. The question just comes down to where and how they are deployed and maintained.
> The bigger question though is whether other approaches besides just trying to catch and stop people could be better.
No one so far has managed to come up with an anything better. Have you?