; (2) the Secretary of Commerce, acting through the Assistant Administrator of the National Marine Fisheries Service; and (3) the Secretary of the Interior, acting through the Director of the United States Fish and Wildlife Service. (b) Study To assess factors affecting successful conservation activities under the Endangered Species Act of 1973 ( 16 U.S.C. 1531 et seq.), the Secretaries shall carry out a study— (1) to review any factors that threaten or endanger a species for which a listing under the Endangered Species Act of 1973 ( 16 U.S.C. 1531 et seq.) would not lead to a sustainable population of the species; (2) to review any barriers to— (A) the delivery of Federal, State, local, or private funds for such conservation activities, including statutory or regulatory impediments, staffing needs, and other relevant considerations; or (B) the implementation of conservation agreements, plans, or other cooperative agreements, including agreements focused on voluntary activities, multispecies efforts, and other relevant considerations; (3) to review factors that impact the ability of the Federal Government to successfully implement the Endangered Species Act of 1973 ( 16 U.S.C. 1531 et seq.); (4) to develop recommendations regarding methods to address barriers identified under paragraph (2), if any; and (5) to review determinations under the Endangered Species Act of 1973 ( 16 U.S.C. 1531 et seq.) in which a species is determined to be recovered by the Secretary of the Interior, acting through the Director of the United States Fish and Wildlife Service, or the Secretary of Commerce, acting through the Assistant Administrator of the National Marine Fisheries Service, but remains listed under that Act, including— (A) an explanation of the factors preventing a delisting or downlisting of the species