In 1990, WWF established an office in Oaxaca, and in 1993 formally established a presence with a mandate for developing conservation projects across the country. That same year, WWF championed the establishment of the Mexican Fund for Conservation of Nature (FMCN). With more than US$30 million as an endowment, the FMCN is currently the largest private nature conservation in Latin America.
In 1998, WWF opened an office in the Chihuahuan Desert, and the following year, local offices for the Gulf of California and the Mesoamerican Reef. At the beginning of 2004 a new office in the monarch butterfly state of Michoacán was also opened.