; (M) operational effectiveness; and (N) estimated cost effectiveness; and (2) an analysis of the domestic supply chain of thorium, including a description of— (A) domestic reserves; (B) operational mines; (C) separation and refinement capabilities; and (D) the ability for the domestic supply chain to meet the requirements of the Department of Defense for thorium. (d) Submission to Congress Not later than December 31, 2020, the Secretary of Defense shall submit to the congressional defense committees a report on the results of the assessment under subsection (b). (e) Congressional defense committees defined In this Act, the term congressional defense committees has the meaning given that term in section 101(a)(16) of title 10, United States Code. 5. Limitation on ammonium perchlorate from foreign sources (a) Limitation Beginning not later than 180 days after the date of the enactment of this Act, the Secretary of Defense shall ensure that any covered ammonium perchlorate is obtained from sources inside the United States. (b) Covered ammonium perchlorate (1) Except as provided in paragraph (2), the term covered ammonium perchlorate means any ammonium perchlorate (or any sodium perchlorate used as a precursor to ammonium perchlorate) that— (A) is incorporated into any item procured by the Department of Defense