In this Saturday, Feb. 2, 2019 photo, U.S. Army troops place additional concertina wire to the border fence on a hillside above Nelson Street in downtown Nogales, Ariz. Nogales, Mexico is seen at right. The small Arizona border city is fighting back against the installation of razor fencing that now covers the entirety of a tall border fence along the city's downtown area. The city of Nogales, which sits on the border with Nogales, Mexico, is contemplating a proclamation Wednesday, Feb. 6, 2019, condemning the use of concertina wire in its town. (Jonathan Clark/Nogales International via AP)
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