A List of the 27 National Monuments Under Review

President Donald Trump issued proclamations on December 4, 2017, attempting to undo the following monuments, removing federal protections on roughly 2 million acres of land.

1. Bears Ears, Utah
2. Grand Staircase-Escalante, Utah

The Department of the Interior completed reviews of the following six national monuments and recommended no changes.

1. Canyons of the Ancients, Colorado
2. Craters of the Moon, Idaho
3. Grand Canyon-Parashant, Arizona
4. Hanford Reach, Washington
5. Sand to Snow, California
6. Upper Missouri River Breaks, Montana

The following 19 national monuments were under review, and their status is unclear.

1. Basin and Range, Nevada
2. Berryessa Snow Mountain, California
3. Carrizo Plain, California
4. Cascade Siskiyou, Oregon
5. Giant Sequoia, California
6. Gold Butte, Nevada
7. Ironwood Forest, Arizona
8. Katahdin Woods and Waters, Maine       
9. Marianas Trench, Northern Mariana Islands/Pacific Ocean
10. Mojave Trails, California
11. Northeast Canyons and Seamounts, Atlantic Ocean
12. Organ Mountains-Desert Peaks, New Mexico
13. Pacific Remote Islands, Pacific Ocean
14. Papahanaumokuakea, Hawaii/Pacific Ocean
15. Rio Grande del Norte, New Mexico
16. Rose Atoll, American Samoa/Pacific Ocean
17. San Gabriel Mountains, California
18. Sonoran Desert, Arizona
19. Vermilion Cliffs, Arizona