I read on occasion the net illegal immigration is zero or negative. I don't know if this is true or not, nor how anyone could measure it reliably. Has anyone else seen such reports?
We already have a barrier/wall on a good portion of the border, authorized in part by a 2006 act congress passed with the votes of Obama and Shumer. I can see how it may need strengthening and perhaps lengthening in certain places.
Call it a barrier and move on, this has gotten so partisan it's rather amazing.