(a) In General.—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) shall not propagate automatically for any non-statistical use by any domestic assistance program, including any such use as required through—

(A) statutory reference to any core-based statistical area delineation; or

(B) administrative or regulatory reference to any core-based statistical area delineation; and

(2) shall propagate for any non-statistical use by any domestic assistance program only—

(A) if a relevant agency determines that such a propagation—

(i) supports the purposes of the program; and

(ii) is in the public interest; and

(B) through affirmative adoption through notice-and-comment rulemaking pursuant to section 553 of title 5.

(b) Definitions.—The definitions in section 4 of the MAPS Act of 2021 shall apply to this section.