31 U.S.C. § 6309

1. (a)Beginning on the date of enactment of the MAPS Act of 2021, and notwithstanding any other provision of law, any change to the standards of core-based statistical area delineations pursuant to section 3504(e) of title 44—
   1. (1)shall not propagate automatically for any non-statistical use by any domestic assistance program, including any such use as required through—
      1. (A)statutory reference to any core-based statistical area delineation; or
      2. (B)administrative or regulatory reference to any core-based statistical area delineation; and
   2. (2)shall propagate for any non-statistical use by any domestic assistance program only—
      1. (A)if a relevant agency determines that such a propagation—
         1. (i)supports the purposes of the program; and
         2. (ii)is in the public interest; and
      2. (B)through affirmative adoption through notice-and-comment rulemaking pursuant to section 553 of title 5.
2. (b)The definitions in section 4 of the MAPS Act of 2021 shall apply to this section.