 In addition to environmental reasons, Fonda has been a critic of oil pipelines because of their being built without consent on Native American Land.In 2017, Fonda responded to American President Donald Trump's mandate to resume construction of the controversial North Dakota Pipelines by saying that Trump "does this illegally because he has not gotten consent from the tribes through whose countries this goes" and pointing out that "the U.S. has agreed to treaties that require them to get the consent of the people who are affected, the indigenous people who live there.