President Trump wants to stop illegal immigration with a wall along the U.S.-Mexico border, but experts agree it would harm the ecology of one of the most biodiverse regions of North America.

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Arizona Center for Investigative Reporting
Independent, nonprofit investigative journalism for Arizona
President Trump wants to stop illegal immigration with a wall along the U.S.-Mexico border, but experts agree it would harm the ecology of one of the most biodiverse regions of North America.