The U.S. Border Patrol is alerting Mexican officials when civilian border patrol groups detain or allegedly mistreat suspected illegal immigrants, according to a newspaper report published Tuesday. The policy is meant to assure the Mexican government that migrants' rights are being observed, U.S. Customs and Border Protection spokesman Mario Martinez told the Inland Valley Daily Bulletin of Ontario. On Tuesday, the agency called the article inaccurate. Citing interviews with Border Patrol agents and documents on a Mexican government Web site, the newspaper reported agents notify Mexican authorities when members of civilian groups such as the Minuteman Civil Defense Corps apprehend...