"Border barriers can discourage unauthorized border crossings, but the research is mixed in terms of how much they deter migrants from entering the U.S. without permission."
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The presence of physical barriers in key locations along the US-MX border can deter the potential illegal crossers and reduce the number of attempts made
US Politics
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Claim
The presence of a wall along the US-MX border can reduce spontaneous or opportunistic attempts, as the physical obstacle necessitates more planning and risk for those attempting to cross
US Politics
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Claim