Tohono O'odham Tat Momolikot Dam Settlement Act
Public Law 99-469 · H.R. 4217 · 99th Congress · began in the House
Signed by Ronald Reagan (R) on Oct 14, 1986 · Native Americans
Sponsor: Rep. Morris Udall (D-AZ-2)
Cosponsors (1): Rep. John McCain
Passage votes
- HouseVoice vote
- SenateVoice vote
Data notes
The final version of the law, as each chamber passed it. A chamber that passed it by voice vote or unanimous consent has no count. “Method not stated” means the record does not say how the chamber voted. Where the record has a member-by-member vote, the “Who voted for it” section shows who voted yea.
Summary
The Congressional Research Service’s plain-language summary of what the law does.
Tohono O'odham Tat Momolikot Dam Settlement Act - Requires the Secretary of the Treasury, if the Tohono O'odham Nation (the Tribe) executes a waiver of claims against the United States with regard to the construction of the Tat Momolikot Dam, to pay the authorized governing body of the Tribe the sum of $6,000,000 for the benefit of the Tribe.
Requires the Tribe to invest such sums in interest-bearing deposits and securities. Allows the governing body of the Tribe to spend the principal, interest, and dividends for economic and community development of the Tribe. Requires $100,000 to be paid the heads of households residing and owning improvements at the Tat Momoli village in 1969 or their heirs. Provides that the Secretary of the Interior shall not be responsible for the review, approval, or audit of the use and expenditure of such sums, nor shall he be liable for claims that arise from such use and expenditure by such Tribe.
Authorizes appropriations.
Conditions the Secretary of the Interior's obligation to carry out functions under this Act upon tribal waiver of certain claims against the United States and the grant of appropriate rights with respect to the construction of the Tat Momolikot Dam.
Requires the Secretary, within two years after the enactment of this Act, to construct fences and cattleguards in the vicinity of the Tat Momolikot Dam.
Committees
The committees the bill was sent to, and what each did with it.
Natural Resources Committee · House · hearings by (full committee), markup by, referred to, reported by
Data notes
A committee links to its page only where it exists in the current Congress; older and renamed committees are named without a link.
Timeline
From introduction to signing, newest first: the committees, the floor and the president. 11 actions.
- Oct 14, 1986Became lawBecame law · Became Public Law No: 99-469.
- Became lawBecame law · Signed by President.
- Oct 3, 1986PresidentPresident · Presented to President.
- Oct 1, 1986FloorFloor · Passed Senate without amendment by Voice Vote.
- Sep 24, 1986FloorFloor · Received in the Senate and read twice and held at the desk by unanimous consent. Pending further disposition.
- Sep 23, 1986FloorFloor · Passed House (Amended) by Voice Vote.
- Sep 19, 1986CommitteeCommittee · Reported by House Natural Resources Committee
- Aug 13, 1986CommitteeCommittee · Markup by House Natural Resources Committee
- Jun 16, 1986CommitteeCommittee · Hearings by House Natural Resources Committee
- Feb 24, 1986CommitteeCommittee · Referred to House Natural Resources Committee
- IntroducedIntroduced · Introduced in the House
Data notes
Shows the introduction, each committee and subcommittee step the source dates (referral, hearings, markup, report, discharge), and the floor, conference, presidential and became-law steps. Calendar placements, messages between the chambers, amendments and committee report numbers are not shown for laws before the 108th Congress. Two entries the source lists twice are shown once.
Official record
The bill’s full text and every action, including introduction and committee steps, are on Congress.gov. Data through Oct 7, 2026.