“I know you!” Border Patrol agent Hector Covarrubias exclaimed in his rapid-fire Spanish to two women from Torreón, Mexico who he had just detained. We were in a desert area on the U.S. side of the border wall that separates Sunland Park, New Mexico from Anapra, Mexico. This is a heavily trafficked area by migrants only a few miles west of the large cities, El Paso, Texas and Juárez, Mexico. “I detained you yesterday,” he continued.