The San Carlos Apache Tribe, the National Audubon Society in Tucson, the Grand Canyon Chapter of the Sierra Club as well as the National Congress of American Indians have joined in the fight against the Resolution Copper land swap. Native American groups and conservationists worry about the impact to surrounding areas and have led a strong opposition to the land exchange. James Anaya, former United Nations special rapporteur on the rights of indigenous peoples, said that without community and tribal support, Rio Tinto should abandon its Resolution Copper mining project. In 2014, Secretary of the Interior Sally Jewell said she was "profoundly disappointed with the Resolution Copper land-swap provision, which has no regard for lands considered sacred by nearby Indian tribes".