; no effect on authority of remaining members A vacancy in the membership of the Commission shall be filled in the same manner as the original appointment, and shall have no effect on the authority of the remaining members of the Commission to carry out their duties under this Act. (b) Term of service (1) Single 10-year term Except as provided in paragraphs (2) and (3), a member of the Commission shall serve for a term of 10 years, and may not be reappointed to an additional term, except that an individual may serve after the expiration of that individual’s term until a successor has begun serving as a member of the Commission. (2) Staggering of initial terms Of the members first appointed to the Commission— (A) one (as designated at the time of appointment) shall serve for a term of 2 years; (B) one (as designated at the time of appointment) shall serve for a term of 4 years; (C) one (as designated at the time of appointment) shall serve for a term of 6 years