What division is in charge of reestablishing the endangered species that are facing possible extinction?

The division primarily responsible for reestablishing endangered species is the U.S. Fish and Wildlife Service (USFWS), specifically its Endangered Species Program. This program implements the Endangered Species Act, which aims to protect and recover imperiled species and their habitats. It works in collaboration with state and local agencies, conservation organizations, and other stakeholders to develop recovery plans and facilitate species reintroduction efforts.