The Sinaloa Cartel began to contest the Gulf Cartel’s domination of the coveted southwest Texas corridor following the arrest of Gulf Cartel leader Osiel Cárdenas in March 2003. The “Federation” was the result of a 2006 accord between several groups located in the Pacific state of Sinaloa. The cartel is led by Joaquín “El Chapo” Guzmán, Mexico’s most-wanted drug trafficker and whose estimated net worth of US$1 billion makes him the 701st richest man in the world, according to Forbes Magazine. In February 2010, new alliances were formed against Los Zetas and Beltran Leyva Cartel. As of May 2010, numerous reports by Mexican and US media claimed that Sinaloa had infiltrated the Mexican federal government and military, and colluded with it to destroy the other cartels. The Colima Cartel, Sonora Cartel and Milenio Cartel are now branches of the Sinaloa Cartel.