Should Trump continue making Drug interdiction a major point in wall issue??

I am all for a wall - and I detest drugs of all kinds - even marijuana.

BUT - I have given a lot of thought to the "walls will stop drugs' argument.

It is my understanding that drugs - cocaine is what is in my mind - is being confiscated by the ton at ports of entry. I don't recall many high-tonnage intercepts along the desert border area.

At first I thought "well, just because drugs are being seized a much higher area in ports of entry, doesn't mean that even more is not pouring across the unmanned border areas."

But that thought doesn't hold water - you would have to imagine TONS of material being transported to and across the border without detection. Then it would have to be accumulated at transportation centers for distribution - seems like a hard thing to conceal out on a desert cattle ranch.

SO - please enlighten me - is it REAL that overwhelming majority of drugs are being transferred thru ports of entry or not?

If so - then I think it is counter-productive to highlight that as a major benefit of building a border wall.

If the claim that more drugs are pouring across the undefended border areas, then please present a rational scenario about how that could effectively happen on a large scale over decades??

To be absolutely POSTIVE - I want a border wall - but almost exclusively for the demographic instabilities that it results in - drug intervention is also good, but not a deciding factor.

eta:
dang - just tuned in to FNC and they are doing a story on drug cartels - missed the entire episode - been watching CNN for a change of pace this morning