Emilio José has achieved the impossible: an appointment at the immigration office—the most feared place among migrants. Few make it out unscathed. Few make it out at all. “Unapproved migrant, catapulted migrant,” goes the saying among Latinos. Emilio knows the catapult, he’s seen it in action, flinging some poor soul into deportation. But today, none of that matters. Today, the...