Among those who oppose a border wall/fence/barrier, one argument is that it would be too expensive.
To counter this argument, the Center for Immigration Studies now has a useful study available on its website, entitled
The Cost of a Border Wall vs. the Cost of Illegal Immigration, by Steven A. Camarota.
Camarota shows that even a partially-successful wall would pay for itself.
For the entire blog entry, click, here.
Blog entry by Allan Wall, published on VDARE.COM, on February 25th, 2017.