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.

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.