In 2023, thousands of migrants from West Africa arrived in Lockland, Ohio, nearly doubling the town’s population so suddenly it seemed to some that it happened overnight. Most had fled Mauritania, saying they were persecuted for opposing the authoritarian government. They journeyed through South and Central America, then asked for asylum at the U.S. border. They got to this town on Cincinnati's outskirts with only the clothes on their backs. In …