The increasing number of deaths adds urgency to questions about when and how agents should engage in high-speed chases as they pursue smugglers and migrants.
WASHINGTON Angie Simms had been searching for her 25-year-old son for a week, filing a missing-persons report and calling anyone who might have seen him, when the call came in August. Her son, Erik Molix, was in a hospital in El Paso, Texas, where he was strapped to his bed, on a ventilator and in a medically induced coma.