or supply chain security technical expertise, cybersecurity or supply chain security policy expertise, or expertise in running the cybersecurity or supply chain security functions of a business. (C) Representation In appointing members of the Board under subparagraph (A), the Assistant Secretary shall ensure that the members appointed provide a balanced representation of the following: (i) Chief cybersecurity officers or other qualified individuals employed in cybersecurity positions, representing both the public and private sectors. (ii) Persons who operate or maintain information and communications networks. (iii) Vendors that produce or provide equipment used in information and communications networks. (iv) Vendors that produce or provide software used in information and communications networks. (v) Persons who operate or maintain internet applications. (D) Limitation An individual who is a registered lobbyist under the Lobbying Disclosure Act of 1995 ( 2 U.S.C. 1601 et seq. ) may not serve as a member of the Board. (2) Terms (A) In general Except as provided in subparagraphs (C) and (D), each member of the Board shall be appointed for a term of a length not to exceed 2 years, to be determined by the Assistant Secretary. (B) Reappointment A member of the Board, including a member appointed to fill a vacancy as provided in subparagraph (D), may be reappointed for 1 or more additional terms by the Assistant Secretary. (C) Removal The Assistant Secretary may remove a member of the Board at the discretion of the Assistant Secretary. (D) Vacancy Any member of the Board appointed to fill a vacancy occurring before the expiration of the term for which the predecessor of the member was appointed shall be appointed only for the remainder of such term. A vacancy in the Board shall be filled in the manner in which the original appointment was made. (3) Chair The Chair of the Board shall be the Associate Administrator of the National Telecommunications and Information Administration for Policy Analysis and Development.