Build the fence!
eff the fence. I want a brick wall. Something that is a PITA to dig under and impossible to climb over.
I saw a sample fence compromised in 3 ways in less than 5 minutes.
a militarized boarder with shoot to kill orders works to.
Best yet. Put the military on top of said wall with shoot to kill orders.
This is not a game and this is long past due. Keep the cess pool on the south side of the wall.