"The President Stole Your Land," the company said in stark white lettering on a black background as part of an internet campaign aimed at fighting two White House proclamations to scale down the Bears Ears and Grand Staircase-Escalante monuments by hundreds of thousands of acres.

Yvon Chouinard, Patagonia's outspoken founder, also vowed to sue Mr. Trump

"The administration's unlawful actions betray our shared responsibility to protect iconic places for future generations and represent the largest elimination of protected land in American history," Hilary Dessouky, Patagonia's general counsel

"The administration's unlawful actions betray our shared responsibility to protect iconic places for future generations and represent the largest elimination of protected land in American history," Marcario said in the statement. "We've fought to protect these places since we were founded and now we'll continue that fight in the courts."

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