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