A man alleged to have been a member of Mexico’s Gulf Cartel and later of the Zetas criminal organization appeared in U.S. federal court Friday and – when he saw his mother, wife and sister in the room – broke down sobbing, his big frame shaking visibly. Wearing khaki pants, a wrinkled blue shirt and shackles on his wrists, Luis Alberto Blanco Flores, known as “El Pelochas,” appeared at a preliminary hearing as a follow-up to his arrest on July 23 for illegal entry to the United States. At the hearing, an agent for U.S. Immigration and Customs Enforcement testified...