; and (C) is prohibited from advocating for the adoption or rejection of any legislative proposal. (3) Designation of existing agency At its option, a State may designate an existing agency in the legislative branch of its government to appoint the members of the independent redistricting commission plan for the State under this title, so long as the agency meets the requirements for nonpartisanship under this subsection. (4) Termination of agency specifically established for redistricting If a State does not designate an existing agency under paragraph (3) but instead establishes a new agency to serve as the nonpartisan agency under this section, the new agency shall terminate upon the enactment into law of the redistricting plan for the State. (5) Deadline The State shall meet the requirements of this subsection not later than each August 15 of a year ending in the numeral nine. (b) Establishment of Select Committee on Redistricting (1) In general Each State shall appoint a Select Committee on Redistricting to approve or disapprove a selection pool developed by the independent redistricting commission for the State under section 3202. (2) Appointment The Select Committee on Redistricting for a State under this subsection shall consist of the following members: (A) 1 member of the upper house of the State legislature, who shall be appointed by the leader of the party with the greatest number of seats in the upper house. (B) 1 member of the upper house of the State legislature, who shall be appointed by the leader of the party with the second greatest number of seats in the upper house. (C) 1 member of the lower house of the State legislature, who shall be appointed by the leader of the party with the greatest number of seats in the lower house. (D) 1 member of the lower house of the State legislature, who shall be appointed by the leader of the party with the second greatest number of seats in the lower house. (3) Special rule for States with unicameral legislature In the case of a State with a unicameral