The Wall solution is so asinine. Ridiculous amounts of labor and maintenance for a obsolete solution that has a hundred flaws. Drones surveillance of the border (and coastlines) would be far more efficient and provide a boost to an emerging industry.... but he's looking for a grand project that people can look at as a symbol of his mark upon the world. It's simply a way to placate his anti-intellectual supporters who simply aren't creative enough to innovate a more practical solution.... but hey, it worked for the Chinese right? (wrong)