US - Mexico border wall in most effective areas is already built
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Claims that US - Mexico border wall is somewhat effective in stopping illegal immigration
US Politics
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Border Patrol Chief Ronald Vitiello told Reuters that he is aware that some of his agents require "handfuls" of miles of additional fencing, though he declined to comment on the number of additional miles required.
US Politics
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Commissioner of U.S. Customs and Border Protection (CBP) Gil Kerlikowske said in January 2017, “I think that anyone who’s been familiar with the southwest border and the terrain ... kind of recognizes that building a wall along the entire southwest border is probably not going to work,” adding that he does not “think it is feasible” or the “smartest way to use taxpayer money on infrastructure.”
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