Ultimately, local opposition to Los Angeles' attempts to secure the Kings River turned into significant political pressure to create a national park, which would prevent any dam projects there. United States Secretary of the Interior Harold Ickes was a major proponent for the expansion of the park, and worked to unite local interests, who had widely different views on how much development should be allowed. Ickes also hired Ansel Adams to photograph and document the area, generating publicity for the preservation movement. However, in order to placate the local irrigation districts - who wanted to leave open the option of reservoirs - Cedar Grove and Tehipite Valley were specifically excluded from the new park. On March 4, 1940, President Franklin D. Roosevelt signed the bill to create Kings Canyon National Park, which added the original General Grant National Park to over of the High Sierra above Cedar Grove.