Answer
The United States Fish and Wildlife Service (FWS) and the National Oceanic and Atmospheric Administration (NOAA).
Step-by-step explanation
The United States Fish and Wildlife Service (FWS) and the National Oceanic and Atmospheric Administration (NOAA) are the bodies under the the federal government of US which deals with the management of fish and wildlife and the oceanic life and other species. They facilitate in conserving the nature of united states. These two bodies also have the mandate and power to to list animals as endangered species.They do so by administering the Endangered Species Act. The receive a petition from individual or organization and assess its internal species candidate.