Why not REAL fences AND virtual fences?..
And fortified areas(camps) in the most obvious insurgent places..
With proximity watched zones.. and Ariel surveillance..
Coast Guard submarines may not be a bad idea.. not nukes but diesel..
The only path to a permanent resident and citizen status should be via entering the country legally with proper visa. All others should be deported. Period.
If we don’t do this we will become a third world country..with the rich in their gated communities with maids,gardeners and security and no middle class. We already are starting to share many characteristics of IIIW.