DEL RIO, Texas—The largest caravan of illegal immigrants to date was, for them, successful. At its height, around Sept. 18, nearly 15,000 mostly Haitian nationals who had primarily been living in Chile or Brazil, were camped under an international bridge in Del Rio, Texas, that had been closed to legitimate trade and travel. More than 12,400 of the aliens were ultimately released into the United States as the primitive camp was cleared and dismantled, according to Department of Homeland Security Secretary Alejandro Mayorkas. The majority were given either a notice to appear, which is a date to appear in immigration court, or a notice to report, which is a request to check in with Immigration and Customs Enforcement (ICE) within 60 days. None were tested for COVID-19. About 2,000 Haitians were flown back to Haiti during the week, Mayorkas said on Sept. 24. He also said that Border Patrol had …