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FALFURRIAS, TX - MARCH 17: Immigrant rights activist Eddie Canales stocks remote water stations along migrant trails on March 17, 2017 near Falfurrias, Brooks County, Texas. Canales runs the South Texas Human Rights Center, which aims to save the lives of undocumented immigrants on their perilous journey north through the region's vast ranches and brushlands. In recent years more migrants have died of dehydration in Brooks County, located 70 miles north of the U.S. Mexico border, than any other area in the United States. (Photo by John Moore/Getty Images)

FALFURRIAS, TX - MARCH 17:  Immigrant rights activist Eddie Canales stocks remote water stations along migrant trails on March 17, 2017 near Falfurrias, Brooks County, Texas. Canales runs the South Texas Human Rights Center, which aims to save the lives of undocumented immigrants on their perilous journey north through the region's vast ranches and brushlands. In recent years more migrants have died of dehydration in Brooks County, located 70 miles north of the U.S. Mexico border, than any other area in the United States.  (Photo by John Moore/Getty Images)