A recently constructed section of the controversial US-Mexico border fence expansion project crosses previously pristine desert sands at sunrise on March 14, 2009 between Yuma, Arizona and Calexico, California. The new barrier between the US and Mexico stands 15 feet tall and sits on top of the sand so it can be lifted by a machine and repositioned whenever the migrating desert dunes begin to bury it. The almost seven miles of floating fence cost about $6 million per mile to build. (David McNew/Getty Images)
The border fence is keeping many of my friends employed and my ESOP afloat. The virtual fence is a pretty interesting concept.
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