There IS an easement-—Teddy Roosevelt acquired one in 1907-—60 foot wide.
However, an easement & OWNERSHIP of that land are 2 different thing.s
I wonder how many deeds to land on the border are accurate & are including that easement???
A major problem with the border wall is that the Rio Grand weaves back and fourth so that currently fences have been erected from loop to loop leaving large patches behind the fence to the south, and hard to access without some way of going through the barrier. Check with Google Earth to see just how loopy this border river actually is. So presumably a lot of people own significant chunks of land that may be cut off, not just a 60 foot wide border alongside the river.
>> However, an easement & OWNERSHIP of that land are 2 different things.
Indeed, one has privileged domain of the other.
What’s your point?