Published May 5, 2017

PORTLAND, Ore. -- The Department of the Interior announced Friday it is reviewing 27 national monuments, including Oregon's Cascade-Siskiyou.

The list is slightly different than the one compiled after President Trump signed an executive order paving the way for the reviews last month.

The initial list included 24 monuments designated by presidents Bill Clinton, George W. Bush and Barack Obama.

The new list includes 27 monuments, including the Cascade-Siskyou National Monument in Southern Oregon, designated by Clinton in 2000 because of its unique and diverse ecology.

The order does not include Oregon's only other national monument, Oregon Caves in Cave Junction.

This is the first ever formal review of monuments conducted by a president of the United States. The public is invited to weigh in on the designations, which fall under the Antiquities Act of 1906.

"There is no pre-determined outcome on any monument," said Secretary of the Interior Ryan Zinke. "I look forward to hearing from and engaging with local communities and stakeholders as this process continues.”

Designation of national monuments has been a hot-button issue in Oregon recently, as environmentalists pushed for Obama to designate the Owyhee Canyonlands a national monument before he left office. Many local ranchers and other stakeholders in Eastern Oregon pushed back, and the designation never materialized.

More: The bitter fight over Oregon's Grand Canyon

Obama did designate other controversial pieces of land as national monuments - the Bears Ears National Monument in Utah, and Gold Butte in Nevada.

Cliven Bundy, father of the leaders of the Oregon standoff at the Malheur National Wildlife Refuge, has claimed ancestral rights to Gold Butte and allegedly allowed his cattle to graze on the land without paying grazing fees.

The Department of the Interior at the time said both monuments contain sacred Native American land.

The White House said comments can be made after May 12 online here, by entering “DOI-2017-0002” in the Search bar and clicking “Search,” or by mail to Monument Review, MS-1530, U.S. Department of the Interior, 1849 C Street NW, Washington, DC 20240.

The full list of monuments under review:

Basin and Range, Nevada

Bears Ears, Utah

Berryessa Snow Mountain, California

Canyons of the Ancients , Colorado

Carrizo Plain, California

Cascade Siskiyou, Oregon

Craters of the Moon, Idaho

Giant Sequoia, California

Gold Butte, Nevada

Grand Canyon-Parashant, Arizona

Grand Staircase-Escalante, Utah

Hanford Reach, Washington

Ironwood Forest, Arizona

Mojave Trails, California

Organ Mountains-Desert Peaks, New Mexico

Rio Grande del Norte, New Mexico

Sand to Snow, California

San Gabriel Mountains, California

Sonoran Desert, Arizona

Upper Missouri River Breaks, Montana

Vermilion Cliffs, Arizona

Katahadin Woods and Waters, Maine

Marianas Trench, CNMI/Pacific Ocean

Northeast Canyons and Seamounts, Atlantic Ocean

Pacific Remote Islands, Pacific Ocean

Papahanaumokuakea, Hawaii/Pacific Ocean

Rose Atoll, American Samoa/Pacific Ocean