President Trump has directed Secretary of the Interior Ryan Zinke to review recent land withdrawals under the 1906 Antiquities Act, to determine whether some should be reversed or reduced in size. The review is long overdue. The act was intended to protect areas of historic, prehistoric or scientific value, with areas designated as monuments to be the smallest size compatible with the proper care and management of objects or sites to be protected. The first designation, the 1,347-acre Devils Tower National Monument (NM) respected that intent, as have most designations since then.