; or (ii) on a country-by-country basis, with respect to foreign nationals or other appropriate persons who hold a security clearance issued by that country, if the Secretary of Defense determines that the vetting procedures of the country are functionally equivalent to the vetting procedures of the United States for United States military personnel. (B) Functional equivalence (i) Definition The Secretary of Defense, acting through the Under Secretary of Defense for Intelligence and Security and in consultation, as appropriate, with the Secretary of State, shall establish and submit to the congressional defense committees a definition of functional equivalence for purposes of making a determination under subparagraph (A)(ii). The Secretary of Defense shall notify the congressional defense committees of any subsequent modification the Secretary makes to the definition. (ii) Assessment The Secretary of Defense shall conduct an assessment of the vetting procedures of a country prior to making a determination of functional equivalence under subparagraph (A)(ii). Such assessment shall take into consideration any information about such procedures provided to the Secretary of Defense by the Secretary of State. (C) Notification requirement The Secretary of Defense shall submit a written notification to the congressional defense committees not later than 48 hours after exercising the waiver authority under subparagraph (A), including a justification for the waiver and an assessment of the vetting procedures of a country, if appropriate. . (b) Type of access covered Subsections (a) through (c) of such section 1090 are further amended by striking physical access each place it appears and inserting unescorted physical access . (c) Definitions (1) Covered individual Subsection (e)(2) of such section is amended to read as follows: (2) The term covered individual — (A) except as provided in subparagraph (B), means a foreign national or other appropriate person who is— (i) seeking unescorted physical access to a Department of