FLAGSTAFF, Ariz. - Back in April, President Trump issued an executive order to reduce in size or eliminate several national monuments in an effort to cut governmental costs. A Colorado team of environmental watchdogs toured Flagstaff Wednesday to point out what they call the dangers of reducing in size or numbers of national monuments in Arizona.

Aaron Weiss with the environmental watchdog group says, "Every indication from President Trump, Interior Secretary Ryan Zinke and politicians close to them is that the outcome is preordained and the review will lead to attempts to shrink or eliminate national monuments," he said.

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"Rolling back national monument protections through executive action is an unprecedented, and likely illegal, move that puts all of America’s protected lands, parks, forests and monuments at risk," Weiss added.

"If you try to eliminate one monument, then you've set a terrible precedent that makes all of our monuments subject to the whims of any future presidents," he said.

President Trump is expected to make a final decision on the future of the national monuments toward the end of August.