; (2) by donation; or (3) by exchange. (b) Treatment of acquired land Land and interests in land acquired under the authority of subsection (a) shall automatically become part of the national monument. 11. Withdrawal (a) In general Subject to valid existing rights, all Federal land within the national monument (including any land or interest in land acquired after the date of enactment of this Act) is withdrawn from— (1) entry, appropriation, or disposal under the public land laws; (2) location, entry, and patent under the mining laws