The Southern Arizona Protection Act proposes to nullify Presidential Proclamation 7320 , which established the Ironwood Forest National Monument in June 2000. This action would effectively revoke the monument's current protected status and designation. Additionally, the bill restricts any future establishment or extension of national monuments within the specific geographic area previously identified as the Ironwood Forest National Monument. Under this legislation, such designations would require express authorization from Congress , thereby limiting the President's unilateral authority under the Antiquities Act for this particular region of southern Arizona.