Photo by: Astrid Galvan FILE - This March 9, 2016, file photo, shows a stop sign in front of the international border fence in Nogales, Ariz. Arizona Gov. Doug Ducey says building a wall isn't the only way to provide security along the U.S.-Mexico border. Ducey made border security a key issue of his 2018 campaign for re-election, and during his first term created the multi-agency Arizona Border Strike Force to focus on border area crime, especially drug smuggling. (AP Photo/Astrid Galvan, File)
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