LEXINGTON, Neb. — A 13-year-old student with whom a middle school teacher is accused of fleeing to create a romantic life in the boy's native Mexico may be required to stay there. An illegal immigrant while residing in the United States, 13-year-old Fernando Rodriguez may not be able to return to the rural town in the U.S. state of Nebraska where he was an eighth-grade student.Kelsey Peterson, 25, and Rodriguez were taken into custody without incident. "They didn't have a very well-defined plan, it was basically to continue driving into Mexico to hide," said Alfredo Arenas, the Baja California...