Peña Nieto continued the drug war with no better success than Calderon had had. Low points were the September 26, 2014 Ayotzinapa (Iguala) mass kidnapping of 43 students enrolled in a teachers’ college in the southern state of Guerrero, and the 2015 prison escape of notorious drug-dealer Joaquín "El Chapo" Guzmán. Peña Nieto was also personally wrapped up in a corruption scandal involving a US$7 million (MXN $100 million) house known as "La Casa Blanca" ("The White House") purchased by his showcase wife, actress Angélica Rivera. This was just one of many scandals that rocked his administration. Enrique Peña Nieto and Angélica Rivera were divorced months after he left office. Peña Nieto encouraged foreign investment, particularly in the automotive industry, and for the first time since President Lazaro Cardenas nationalized the oil industry in 1938, in the energy industry. He also tried to reform the country's educational system. and began construction of a new airport for Mexico City. President Peña was elected with by a slim plurality in 2012 with just under 39% of the vote, but by the time he left office in 2018 he had an 18% approval and a 77% disapproval rating, making him one of the least popular presidents in Mexican history.