yes walls can be broken through but it more of an impediment than nothing at all and if juanita kills her anchor baby falling from the wall fewer mothers and elderly will make the 1000s miles journey to break our laws and get free shit.
no one is building a concrete barrier, Lonnie, it's going to be metal slats embedded in the ground at an angle, with room between. This already exists, just like the rusty fences they've been extending.