The Sinaloa cartel paid Peña Nieto and AMLO bribes
"How did Mayo Zambada become the world's largest drug trafficker? I'll tell you why: He corrupts every level of the Mexican government, up to the president's office. Even the current one."
Former president Enrique Pea Nieto and current president Andrés Manuel López Obrador are both said to have accepted multimillion-dollar bribes from the Sinaloa cartel, according to accusations made in a US document by Joaquín El Chapo Guzmán's attorney Jeffrey Lichtman.