Over-priced, over-hyped junk. Build the Wall.
We are, this system will help us keep it. Otherwise you will see colonias all over Mexico built out of our border wall material. They will treat it like Home Depo.
This is in addition to the wall. Also, what good is the wall if there’s nobody and nothing to watch it and make sure it remains unbreached? Do you plan to put a soldier every 30 feet for the better part of 2000 miles?