How effective would a U.S. -Mexico border wall be?

A key factor in the U.S. government shutdown is funding for a wall on the border with Mexico. President Trump says the wall is needed to cut down illegal immigration and drug trafficking across the border. Earlier we talked to Rafael Carranza, a reporter who's covered U.S.-Mexico border security for major publications, like The Arizona Republic and USA Today. He says a border wall is not as effective as Trump claims. #Governmentshutdown #US #Mexico

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