The recently-signed executive order that calls for the construction of a wall along the U.S. southern border to prevent illegal immigration and terrorists from Mexico has created much talk and speculation regarding the cost of this mega project. The purpose of this report is to investigate the conflicting cost estimates surrounding the project, by analyzing the cost of several design and construction options. During the election campaign, Trump estimated that the cost of the wall will hover at $8-12 billion. However, politicians and engineers challenged that figure as entirely unrealistic, not even covering the minimum predictable costs. Furthermore, according to a Feb. 9th publication by Reuters, a recent preliminary DHS internal document has stated that the project could cost as much as $21.6 billion, and take more than three years to complete. Using the expertise gained by Homeland Security Research Corp. (HSRC) engineers from past border wall-fence consulting projects, HSRC engineers have created a detailed analysis of 4 wall-barrier design alternatives, ranging between: • A maximum-cost concrete wall with multilayered security, 3,145km-long and 40ft-high, from the Pacific Ocean to the Gulf of Mexico, at a cost of $34.2 billion. • A minimum-cost “photo op wall”: a multilayered electronic security barrier, consisting of a 40km-long and 40ft-high concrete wall, as well as a 1,560km-long and 24ft-high fence, at a total cost of $6.2 billion. The full 35-page in-depth report analyzing four border wall construction options, along with extensive technical and financial specifications, can be found at: http://homelandsecurityresearch.com/president-trumps-proposed-border-wall-cost-dispute-analysis

1. 1
President
Trump’s “Border
Wall” Cost
Dispute Analysis
March 2017
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2. Report Table of Contents
2
1 Executive Summary 5
2 The U.S.-Mexico Border Wall Cost Calculation 8
2.1 Facts & Figures 8
2.2 Assumptions 9
2.3 U.S.-Mexico Border Wall Cost Estimation 11
2.3.1 Option A 11
2.3.2 Option B 13
2.3.3 Option C 15
2.3.4 Option D 17
2.3.5 Options Cost* Comparison 18
3 Appendix A: President Trump's Executive Order on Border Security and Immigration
Enforcement Improvement 19
4 Appendix B: Trump’s Mexico Wall Project Geopolitical Analysis 25
5 Appendix C: 2005-2016 Southern Border Security Issues 29
6 Disclaimer & Copyright 35

3. Report List of Tables
3
Table 1 - Border Security Elements [$K] Cost per Kilometer 10
Table 2 - Option A: Multilayered Security 3140 km 40 ft Wall Cost 11
Table 3 - Option B: Multilayered-Security 640 km 40 ft Wall + 800 km Fence + 160 km
Rough-Terrain Fence Cost 13
Table 4 - Option C: Multilayered Security 640 km 20 ft Wall + 800 km Fence + 160 km
Rough-Terrain Fence Cost 15
Table 5 - Option D: Multilayered-Security 40 km 40 ft Wall + 1400 km Fence + 160 km
Rough-Terrain Fence Cost 17

4. Report List of Figures
4
Figure 1 - U.S.-Mexico Border Fences and Other Structures - January 2017 5
Figure 2 - Cost* of 4 Southern Borders - HSRC’s Design Alternatives 6
Figure 3 - Breakdown [%] of Option A by Engineering Elements 12
Figure 4 - Breakdown [%] of Option B by Engineering Elements 14
Figure 5 - Breakdown [%] of Option C by Engineering Elements 16
Figure 6 - Breakdown [%] of Option D by Engineering Elements 18
Figure 7 - Multilayered Electronic Security Wall Cost* [$M] Options 18
Figure 8 - One in Four U.S. Foreign-Born Immigrants are Unauthorized 25
Figure 9 - U.S.-Mexico Border – January 2017 Status 27
Figure 10 - Pedestrian Fence 30
Figure 11 - Vehicle Fence 30

5. President Trump’s “Border Wall” Cost Dispute Analysis
The purpose of this analysis is to make the public aware of the conflicting
cost estimates, by using the expertise of Homeland Security Research Corp.
(HSRC) engineers gained from past border wall-fence consulting projects.
➢ A careful analysis of the Executive Order Section 3 Clause (e)
definition of a “Wall” reveals that it allows the use of any “similarly
secure, contiguous, and impassable physical barrier,” which would
cost about 10% of the value of a concrete wall.
➢ The Executive Order wording allows the administration to limit the
length of the new wall-barrier to 1,610 km. Furthermore, the order
does not specify the electronic sensors and other security
infrastructure to be installed along the new “wall.”
As the cost of the Wall “is in the details” (e.g., design specifications), HSRC
engineers analyzed 4 wall-barrier design alternatives, ranging between:
➢ A maximum-cost concrete wall with multilayered security, 3,145km-
long and 40ft-high, from the Pacific Ocean to the Gulf of Mexico, at a
cost of $34.2 billion*.
➢ A minimum cost “photo op wall”: a multilayered electronic security
barrier, consisting of a 40km-long and 40ft-high concrete wall, as well
as a 1,560km-long and 24ft-high fence, at a total cost of $6.2 billion.
5
U.S.-Mexico Border Fences & Other Structures (as of Jan. 2017)

6. U.S. – Mexico Border Wall Cost Estimation
Demonstrates our cost estimate for a multilayered-security, 3,145km-long 40ft-high wall
constructed from the Pacific Ocean to the Gulf of Mexico. The cost of option A is $34.2 billion.
6
Option A
Demonstrates our cost estimate for a multilayered-security, 640km-long, 40ft-high wall + 800km-
long fence + 160km-long rough terrain fence. The cost of option B is $10.6 billion*.
Option B
Demonstrates our cost estimate for a multilayered electronic security barrier consisting of a 640km-
long and 20ft-high wall + 800km-long smart fence + 160km-long rough terrain smart fence. The
cost of option C is $9.3 billion*.
Option C
Demonstrates our cost estimate for a multilayered electronic security barrier consisting of a 40km-
long, 40ft-high wall + 1400 km fence + 160 km rough-terrain fence. The cost of option D is $6.2
billion*.
Option D
➢ As long as no design details are set by the administration, any cost* estimate from $40 billion to less than $8 billion can
be considered as valid
➢ The Trump administration can construct an effective southern border “photo op wall” at a cost* of $10 billion, as long as
the physical concrete wall length is less than 200 km long
➢ No “wall technology” in sight can stop sophisticated contraband smugglers

7. Cost* of 4 Southern Borders – HSRC’s Design Alternatives (B$)
7
(*) The cost does not include expenses related to new roadways, compensation to private landowners, and new power lines.

8. The full free 35-page in-depth report analyzing
four border wall construction options, along
with extensive technical and financial
specifications, can be found at:
http://homelandsecurityresearch.com/president-trumps-proposed-
border-wall-cost-dispute-analysis
2017
©All Rights Reserved

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2017
©All Rights Reserved