; and (2) subject to subsection (d), shall not convert to nonagricultural uses farmland— (A) that is permanently protected farmland; (B) that has been defined and delineated by the Secretary under subsection (b)(1) as farmland of national significance; or (C) that has been defined and delineated by a State as significant to the State or a priority for inclusion in a State farmland protection program and for which the State has submitted a definition and delineation under subsection (b)(2). (b) Definition and delineation of land (1) National significance (A) In general The Secretary shall define and delineate farmland of national significance. (B) Experts The Secretary shall convene a group of experts, including agronomists and soil scientists, to assist the Secretary in carrying out subparagraph (A). (2) State significance Any State wishing to have farmland recognized under subsection (a)(2)(C) shall provide to the Secretary a definition and delineation of the farmland. (c) Process and criteria (1) Process and criteria The Secretary shall develop a process, including criteria— (A) to determine the potential conversion of farmland as a consequence of any action or activity conducted through a Federal program; (B) (i) to minimize the conversion of farmland to nonagricultural uses; or (ii) in the case of farmland identified under subsection (a)(2), to avoid conversion of the farmland to nonagricultural uses; (C) to provide to the Secretary notice regarding actions described in subparagraphs (A) and (B)