The unsecured southern border costs $338,300,000,000.00 annually in illegal and unconstitutional support for invading foreigners:

https:// www.youtube.com/watch?v=ObadcaxDhB8&feature=youtu.be&t=974

$22,000,000,000.00 is spent on welfare for illegal, invading foreigners each year

$22,000,000,000.00 is spent on food for illegal, invading foreigners

2,500,000,000.00 is spent on medicaid benefits for illegal, invading foreigners each year

12,000,000,000.00 is spent on primary and secondary schooling for illegal, invading foreigners each year

17,000,000,000.00 is spent on the education of anchor babies of illegal, invading foreigners each year

$1,095,000,000.00 is spent on the incarceration of illegal, invading foreigners each year (30% of the total prison population in the US are illegal, invading foreigners)

$90,000,000,000.00 is spent on providing welfare and social services to illegal, invading foreigners each year

$200,000,000,000.00 in wages are stolen from legal American citizens (suppressed wages) by illegal, invading foreigners each year, 25% of which leaves our country to their countries each year

This national economic and security threat can be almost perfectly resolved by taking (only once) just 6% of the US annual (repeated) damages incurred by these illegal, foreign invaders - a relatively meager $20B - and building a border wall.

In fact, if the total damages were denied for one year only, we could build the Southern border wall 16.915 times over!

Alternatively, not only could the southern border be secured, but the northern border could be secured at the same cost per mile, in addition to ALL coastal borders and we would still have a whopping $135,004,196,519.95 left over - enough to build 6.75 ADDITIONAL Southern border walls!

(PS- none of this is includes any economies of scale either, which our shrewd President Trump certainly has the experience and capacity to employ)

At $10,235,414.53 per mile, ($20B/1954mi)

cost of Mexico border wall:

https:// en.wikipedia.org/wiki/Us_mexico_border

1,954 mi = $20,000,000,000.00

cost of Canada border wall:

https:// en.wikipedia.org/wiki/Canada_us_border

5,525 mi = $56,550,665,301.95

cost of all coastline walls:

https:// www.infoplease.com/world/united-states-geography/coastline-united-states

12,383 mi (incl Alaska) = $126,745,138,178.10

Annual damages sustained by the American people: $338,300,000,000.00

Total one-time build cost to secure every border: $203,295,803,480.05

…

Nancy, the American People are watching you.