Warren was arrested in January 2018 by U.S. agents who were staking out a humanitarian aid station in Arizona known as “The Barn,” where two Central American men had been staying for several days. “What they needed was a place to hide, and that’s what the defendant gave them, and that is an intent to violate the law,” Michael Bailey, the U.S. attorney for Arizona, said he was disappointed with the verdict, but promised to continue prosecuting people who harbor and smuggle immigrants and those who sneak across the border. The Border Patrol had been investigating The Barn for months,...