It’s widely known that President Trump is intent on building a border wall between the U.S. and Mexico. What An existing section of the border fence between Brownsville and McAllen, Tex. Source: Bryan Schutmaat / MSNBCAn existing section of the border fence between Brownsville and McAllen, Tex. Source: Bryan Schutmaat / MSNBCmight such a structure look like?

One prototype design submitted to the U.S. Department of Homeland Security calls for a 30-foot concrete wall. Another envisions an aqueduct wall, composed of a constant-flow aqueduct along the U.S. side to supply water to nearby areas, a 22-foot-tall wall built from solar panels erected 100 feet from the actual border to power surveillance equipment and a chain-link border fence (funded by the Mexican government) on the actual border. The President himself has suggested that the border wall sport solar panels as a way to generate revenue for its construction and maintenance.

Rendering of Advanced Warning Systems’ aqueduct wall. Source: Advanced Warning SystemsRendering of Advanced Warning Systems’ aqueduct wall. Source: Advanced Warning SystemsU.S. Representative Will Hurd (R-TX) has another idea. Along with congressional colleagues, Rep. Hurd has introduced the Secure Miles with All Resources and Technology (SMART) Act. Under the proposed statute, DHS would be mandated to deploy the most practical and effective border security technologies available to achieve situational awareness and operational control of the border. And according to Rep. Hurd, this means high-tech resources like sensors, radar, LiDAR, fiber optics, drones and cameras to detect and then track border incursions.

The design may be based on surveillance technology under development by Anduril Industries, the new defense company launched by Oculus VR founder Palmer Luckey.

The greater reliance on high-technology rather than a physical barrier offers impressive cost-savings. While the original border wall plan calls for funding of $24.5 million per mile, the SMART wall is expected to incur costs of $500,000 per mile.

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