of Law Enforcement The United States Fish and Wildlife Service Office of Law Enforcement enforces wildlife laws, investigates wildlife crimes, regulates wildlife trade, helps people in the United States understand and obey wildlife protection laws, and works in partnership with international, state, and tribal counterparts to conserve wildlife resources. It also trains other U.S. Government, U.S. state, tribal, and foreign law enforcement officers. Clark R. Bavin National Fish and Wildlife Forensic Laboratory The USFWS operates the Clark R. Bavin National Fish and Wildlife Forensic Laboratory, the only forensics laboratory in the world devoted to wildlife law enforcement. By treaty, it also is the official crime laboratory for the Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES) and the Wildlife Group of Interpol. The laboratory identifies the species or subspecies of pieces, parts, or products of an animal to determine its cause of death, help wildlife officers determine if a violation of law occurred in its death, and to identify and compare physical evidence to link suspects to the crime scene and the animal's death. Division of Refuge Law Enforcement United States Fish and Wildlife Service Refuge Law Enforcement consists of professional law enforcement officers entrusted with protecting natural resources and public safety. Federal Wildlife Officers promote the survival of species and health of the environment by ensuring that wildlife laws are followed. They also welcome visitors and are often the first U.S. Fish and Wildlife Service employees encountered by the public on refuges. Federal Wildlife Officers (FWO) are entrusted with protecting natural resources, visitors and employees on National Wildlife Refuge System lands. Federal Duck Stamp The USFWS issues an annual Federal Duck Stamp, a collectable adhesive stamp required to hunt for migratory waterfowl. It also allows access to National Wildlife Refuges without paying an admission fee. International Affairs Program The USFWS International Affairs Program coordinates domestic and international efforts to protect, restore, and enhance wildlife and its habitats, focusing on species of international concern, fulfilling the USFWS's international responsibilities under about 40 treaties, as well as U.S. laws and regulations. It oversees programs which work with private citizens, local communities, other U.S. Government and U.S. state agencies, foreign governments, non-governmental organizations, scientific and conservation organizations, industry groups. and other interested parties on issues related to the implementation of treaties and laws and the conservation of species around the world. National Conservation Training Center The USFWS's