Lesh
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But experts say that a wall, like the fences that are in place now, won’t deter immigrants who are already risking their lives to cross the border. “As soon as security is increased [in one place], it’s the balloon affect — you grab one area and the flow goes to another area,” says Jason De León, assistant professor of anthropology at the University of Michigan, who has conducted long-term studies of undocumented border crossings.
For instance, some migrants take the risk of crossing rough terrain like the Sonoran Desert, where fences are designed to block vehicles, not pedestrians. Thousands of migrants have died in the exposed conditions around the border crossing.