#1 Mexico
The Mexican government is confronted with critiques that it is unable to prevent the once abundant and now endangered but highly valued Totoaba, a ray-finned fish species (Totoaba macdonaldi) from illegal fishing practices in the upper Gulf of California. Poachers catch Totoaba with illegal gill nets in which an even more endangered species, the Vaquita, a porpoise species (Phocoena sinus) gets entangled as well. The Commission for Environmental Cooperation which investigates law enforcement in the USA, Canada, and Mexico, states that Mexico fails to implement existing regulations.