; and (2) shall not approve such a feedstock or pathway if, based on the consideration under paragraph (1), the Administrator determines that there exists a significant risk described in that paragraph. (b) Report Not later than 120 days after the date of enactment of this Act, the Administrator, in consultation with the Secretary of Agriculture and the Administrator of the United States Agency for International Development, shall publish a report that describes the impact of the renewable fuel program under section 211(o) of the Clean Air Act ( 42 U.S.C. 7545(o) ) on— (1) domestic farm ownership consolidation; and (2) global land acquisition, including the acquisition of land in a manner that violates the land tenure rights of any individual or community. (c) Authorization of appropriations There are authorized to be appropriated such sums as are necessary to carry out this section. 11. Comprehensive assessment of implications on use of mid-level ethanol blends (a) Definition of mid-Level ethanol blend In this section, the term mid-level ethanol blend means an ethanol-gasoline blend that— (1) contains more than 10 but not more than 20 percent ethanol by volume; and (2) is intended to be used in any conventional, gasoline-powered— (A) onroad, nonroad, or marine engine; or (B) onroad or nonroad vehicle. (b) Assessment (1) In general The Administrator, acting through the Assistant Administrators of the Office of Research and Development and the Office of Air and Radiation, shall— (A) not later than 45 days after the date of enactment of this Act, enter into an agreement with the National Academy of Sciences under which the Academy shall provide to the Assistant Administrators, by not later than 18 months after that date of enactment, a comprehensive assessment of the scientific and technical research regarding the implications of the use of mid-level ethanol blends, as compared to the use of gasoline blends containing 10 percent or 0 percent ethanol, in accordance with paragraph (2)