; and (B) $1,000,000 for subsection (c); and (2) for each fiscal year after fiscal year 2018, such sums as may be necessary. II Generating Demand For Native Plant Materials 201. Policy for use of locally adapted native plant materials by Department of Agriculture and Department of the Interior (a) Policy In undertaking a land management activity on Federal lands under the jurisdiction of the Department of Agriculture or the Department of the Interior, including maintenance and restoration in response to degradation caused by human activity or natural events (such as fire, flood, or infestation), it is the policy of the United States that preference shall be made to the extent practicable for the use of locally adapted native plant materials. (b) Implementation The Secretary of Agriculture, acting through the Chief of the Forest Service, and the Secretary of the Interior, acting through the heads of land management agencies of the Department of the Interior, shall— (1) implement the policy established by subsection (a) through appropriate administrative actions; and (2) specifically identify situations in which the use of nonnative plant materials may be warranted, including situations in which— (A) emergency conditions require the protection of basic resource values; (B) an interim, nonpersistent measure is needed to aid in the reestablishment of native plant species; (C) native plant materials are not reasonably available