At a U.S. Congressional Committee hearing at the ʻIolani Palace in January 1946, Campbell testified:[7]I do not feel [...] we should forfeit the traditional rights and privileges of the natives of our islands for a mere thimbleful of votes in Congress, that we, the lovers of Hawaiʻi from long association with it should sacrifice our birthright for the greed of alien desires to remain on our shores, that we should satisfy the thirst for power and control of some inflated industrialists and politicians who hide under the guise of friends of Hawaiʻi, yet still keeping an eagle eye on the financial and political pressure button of subjugation over the people in general of these islands.

Campbell spoke for over two hours, advocating for Hawaiian self-governance and protesting the economic control the Big Five corporations had over the islands.

[8] Throughout her campaign against statehood, Campbell would shift her arguments from demanding independence to advocating for commonwealth status.

[8] In September 1947, she opened the "Anti-Statehood Clearing House," collecting testimony from Hawaiians opposed to statehood to send to Congressmembers.

[2] In February 1960 Campbell reported to the Hawaiʻi State Senate that Pele had appeared to her in a vision, and that the goddess had asked, "Now that we are at the crisis of our destiny are we to fall into oblivion?

She recorded dramatic readings of moʻolelo (traditional narrative stories) along with the original music compositions of Jack de Mello.

[9] Campbell chose the beachfront property to become her home in 1939, living there with her family in a thatched Hawaiian hale and tropical surroundings.

[11] In 2021 the James Campbell Company announced that the 11-acre Paradise Cove property would be redeveloped to include a luau, restaurants, and retail stores.