or State may claim legislative privilege under either State or Federal law in a civil action brought under this section or in any other legal challenge, under either State or Federal law, to a redistricting plan enacted under this subtitle. 403. State apportionment notice defined In this Act, the State apportionment notice means, with respect to a State, the notice sent to the State from the Clerk of the House of Representatives under section 22(b) of the Act entitled An Act to provide for the fifteenth and subsequent decennial censuses and to provide for an apportionment of Representatives in Congress , approved June 18, 1929 ( 2 U.S.C. 2a ), of the number of Representatives to which the State is entitled. 404. No effect on elections for State and local office Nothing in this Act or in any amendment made by this Act may be construed to affect the manner in which a State carries out elections for State or local office, including the process by which a State establishes the districts used in such elections. 405. Effective date This Act and the amendments made by this Act shall apply with respect to redistricting carried out pursuant to the decennial census conducted during 2030 or any succeeding decennial census. V Requirements for Redistricting Carried Out Pursuant to 2020 Census A Application of Certain Requirements for Redistricting Carried out Pursuant to 2020 Census 501. Application of certain requirements for redistricting carried out pursuant to 2020 Census Notwithstanding section 405, titles I, III, and IV of this Act and the amendments made by such titles shall apply with respect to congressional redistricting carried out pursuant to the decennial census conducted during 2020 in the same manner as such titles and the amendments made by such titles apply with respect to redistricting carried out pursuant to the decennial census conducted during 2030, except as follows: (1) Except as provided in subsection (c) and subsection (d) of section 101, the redistricting shall be conducted in accordance with— (A)