While some migrants cross the U.S. - Mexico border illegally and wait on the U.S. side of the wall to make asylum claims, others are stuck in Nogales waiting for their turn to claim asylum.
Arizona rancher George Alan Kelly received a mistrial after he was accused of shooting dead an unarmed Mexican migrant on his land because only one juror believed he was guilty.
Kelly, 75, was accused of killing Gabriel Cuen-Buitimea last January at his home in Nogales, near the Mexican border, with a judge overseeing the case ruling it a mistrial.