Would national referendum on building a wall along the Mexican border possibly be approved?

[PJMcK]

3. The wall would never be built

There are two reasons the Donald Trump Mexican/US border wall could never be built.

First, the area along the border has very difficult terrain in some places which would make construction very difficult. In this same vein, because of the difficult terrain and lack of roadways, it would be exceedingly difficult to get the building materials to the construction sites. Lastly, much of the border is privately owned and seizing the land under eminent domain or through some other purchase would complicate and delay any construction.

The second problem is the cost. The wall would be just under 2,000 miles long. Some months ago, I did an analysis of the cost of building such a wall and at a conservative estimate of $5,000,000 per mile, this would cost at least $10 Billion dollars. I'm fairly confident that Mexico won't pay for it and neither will Congress.