On 25 August 1959, Congress passed a bill to terminate the tribe; it was called "Belvin's law" because he was the main advocate behind it. Belvin created overwhelming support for termination among tribespeople through his promotion of the bill, describing the process and expected outcomes. Tribal members later interviewed said that Belvin never used the word "termination" for what he was describing, and many people were unaware he was proposing termination. The provisions of the bill were intended to be a final disposition of all trust obligations and a final "dissolution of the tribal governments."