The solution isn't a white elephant wall. It's removing the reason(s) why illegals come here or, more often, why they overstay their visas.
The golden wall is a scam to begin with. It is a shell project.
Most of these dumbasses do not understand that the majority of illegal immigration consists of people getting off a plane and never returning. That is actually cheaper than paying smugglers to guide you through a drainage tunnel. Boats anyone?
If a border wall would serve any purpose, it would not be to keep Mexican out, but rather Americans in. It isn't that crazy of a theory, considering the tens of millions the pentagon is paying for littoral combat shits that are useless against naval vessels.