From the Introduction: "The United States supports international conservation of wildlife and ecosystems through diplomatic efforts, foreign assistance, and other activities. At the diplomatic level, the United States works both multilaterally and bilaterally to set international conservation policy. The United States provides foreign assistance in the form of financial, programmatic, and technical support to address international conservation activities, such as species protection, habitat restoration, and forest recovery, among other priorities. Several federal departments and agencies administer these programs, including the U.S. Department of State (State), U.S. Agency for International Development (USAID), U.S. Department of the Treasury (Treasury), U.S. Fish and Wildlife Service (FWS), and U.S. Forest Service (FS). Congress has shaped U.S. policy and global activities related to conservation through its authorization and appropriation of foreign assistance resources, as well as through oversight activities. Several Members of the 116th Congress have demonstrated interest in international conservation, especially with respect to biodiversity, environmental conservation, and illicit wildlife trade."
CRS Report for Congress, R46493
Congressional Research Service: https://crsreports.congress.gov/