Detailed text transcripts for TV channel - FOXNEWS - 20170116:19:53:00
U.s. officials are calling attention to underground tunnels used by drug smugglers in mexico saying they pose a security risk if mexico doesn't do more to seal them. chris gall a gear with more. >> thank you. we're not just talking about crawl spaces to get from mexico into the u.s. these tunnels are very large and in some cases very elaborate with their own ventilation system, even their own rail systems with the capacity to carry tons of drugs across the border. here's the problem. on the u.s. side of the border, the tunnels have been filled with concrete. but on the mexican side of the bord...
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