A Wall?
What is a wall going to do? Keep the drugs out? Keep the illegals out?
The drugs are coming into the country by underground tunnel, SUBMARINE, shipping, and now their new horizontal drillers making 10" diameter piping tunnels that can span for a mile and are undetectable.
https://motherboard.vice.com/en_us/...retruck-sized-drillers-to-make-drug-pipelines
A wall will not stop any of this.
As far as illegals, sure plenty are walking across the border, but a wall will not stop the flow of illegals as they will continue to come in by truck, tunnel, and other means.
A border wall is not going to stop a million to billion dollar human and drug smuggling enterprise. There is too much money to be made and smugglers will adapt to any wall that we try.