Drones, cameras and AI could be border wall alternatives – CNET

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Since 2015, President Donald Trump has promised to build a “big, beautiful wall” along the 1,950-mile US border with Mexico : a 20- to 30-foot high concrete wall/steel fence he says will stem illegal immigration, keep out illicit drugs and stop terrorists from entering the country. Critics say a physical barrier is unnecessary and ineffective, and they argue that modern tech could do the job instead at a lower cost.

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