The agency in charge of U.S. border security plans to start building prototypes for President Donald Trump's proposed wall with Mexico later this summer.
Ronald Vitiello, Customs and Border Protection's acting deputy commissioner, said Tuesday that four to eight companies will get contracts for prototypes in San Diego that could be models for the roughly 2,000-mile border. Companies will have 30 days to complete the models.
Vitiello says it's impractical to build a wall on about 130 miles of border where there are already natural barriers, like lakes or canyons.
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Trump's budget proposal for 2018 includes $1.6 billion for 74 miles of wall in Texas' Rio Grande Valley and San Diego. There are currently 654 miles of fencing.