Arizona’s legislative leaders can’t dismantle a new national monument near the Grand Canyon that they claimed would harm both the state and local governments, a federal appeals court ruled Wednesday.

In the memorandum ruling, a three-judge panel on the 9th U.S. Circuit Court of Appeals unanimously agreed with a lower court ruling made more than a year ago. Both courts ruled that Republican legislative leaders lacked standing to bring the lawsuit because all of the harms they claimed the monument would cause were speculative.