A bill to amend the Act of August 9, 1955 (commonly known as the "Long-Term Leasing Act"), to authorize leases of up to 99 years for land in the Mashpee Wampanoag Tribe Reservation and land held in trust for the Wampanoag Tribe of Gay Head (Aquinnah), and for other purposes.

Read twice and referred to the Committee on Indian Affairs.

S.5559 through Congress

S.5559 keeps its number as it moves between the House and Senate.

SenateDec 17, 2024IntroducedOfficial record

Major milestones in the imported record. See all actions.

No House action is available in our imported record yet.

Separate related House measures (1)

These are different measures identified as related by Congress.gov. Their text and outcomes may differ; they are not the House stage of S.5559.

Related House bill: H.R.10492 To amend the Act of August 9, 1955 (commonly known as the "Long-Term Leasing Act"), to authorize leases of up to 99 years for land held in trust for the Mashpee Wampanoag Tribe and the Wampanoag Tribe of Gay Head (Aquinnah), and for other purposes.

Congressional Research Service

Official summary

Version 00 · Introduced in Senate · Dec 17, 2024

This bill authorizes the Mashpee Wampanoag Tribe and the Wampanoag Tribe of Gay Head (Aquinnah) to lease their land held in trust for a term of up to 99 years. Both tribes are located in Massachusetts.

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People & committees

Who introduced it

Sen. Markey, Edward J. [D-MA] · D–MA

Committees

Indian Affairs Committee

1 cosponsorship records, including any withdrawals

Sen. Warren, Elizabeth [D-MA]

Legislative record

Actions

A procedural vote is different from passage. Passage in one chamber does not establish enactment. Explore the glossary.

Dec 17, 2024
Read twice and referred to the Committee on Indian Affairs.
Dec 17, 2024
Introduced in Senate

Primary sources

Bill text & related measures

Text links open the official source. We currently store references to these documents.

Introduced in Senate · Dec 17, 2024 Formatted Text PDF Formatted XML

Related bills identified by Congress.gov

Source last updated: Sep 22, 2026. Consult Congress.gov for the current record.

AI Conversation Starters

Explore the bill from different angles

Choose a perspective, copy a prompt, and paste it into your preferred AI. Each prompt includes the bill version and available official source links, and asks for counterarguments as well as supporting evidence.

Neutral evidence review

Objective

Analyze S.5559 as objectively as possible. Explain its main provisions, who would be affected, possible benefits and harms, implementation, exceptions, and uncertainties. Present the strongest arguments for and against it, and identify evidence needed to assess its public impact.

View full prompt & sources

Discuss S.5559, 118th Congress: A bill to amend the Act of August 9, 1955 (commonly known as the "Long-Term Leasing Act"), to authorize leases of up to 99 years for land in the Mashpee Wampanoag Tribe Reservation and land held in trust for the Wampanoag Tribe of Gay Head (Aquinnah), and for other purposes.

Official record: https://www.congress.gov/bill/118th-congress/senate-bill/5559

Text version to examine: Introduced in Senate · 2024-12-17.

Official full text: https://www.congress.gov/118/bills/s5559/BILLS-118s5559is.htm

Imported record last updated by the source: 2026-09-22T20:40:40Z. Verify current status and distinguish any later version from the version above.

Read the official text before answering. If you cannot access it, say so and ask me to provide it; do not assume a link means you have read the document. Distinguish proposals from enacted law, cite sources, and separate facts, interpretation, and uncertain predictions. Include counterarguments even when using a particular perspective.

Analyze S.5559 as objectively as possible. Explain its main provisions, who would be affected, possible benefits and harms, implementation, exceptions, and uncertainties. Present the strongest arguments for and against it, and identify evidence needed to assess its public impact.

Fairness and public impact

Progressive lens

Examine S.5559 through a progressive lens, focusing on fairness, access, economic inequality, and effects on vulnerable communities. Explain potential benefits, costs, and unintended consequences. Consider the strongest counterarguments and distinguish stated goals from demonstrated outcomes.

View full prompt & sources

Discuss S.5559, 118th Congress: A bill to amend the Act of August 9, 1955 (commonly known as the "Long-Term Leasing Act"), to authorize leases of up to 99 years for land in the Mashpee Wampanoag Tribe Reservation and land held in trust for the Wampanoag Tribe of Gay Head (Aquinnah), and for other purposes.

Official record: https://www.congress.gov/bill/118th-congress/senate-bill/5559

Text version to examine: Introduced in Senate · 2024-12-17.

Official full text: https://www.congress.gov/118/bills/s5559/BILLS-118s5559is.htm

Imported record last updated by the source: 2026-09-22T20:40:40Z. Verify current status and distinguish any later version from the version above.

Read the official text before answering. If you cannot access it, say so and ask me to provide it; do not assume a link means you have read the document. Distinguish proposals from enacted law, cite sources, and separate facts, interpretation, and uncertain predictions. Include counterarguments even when using a particular perspective.

Examine S.5559 through a progressive lens, focusing on fairness, access, economic inequality, and effects on vulnerable communities. Explain potential benefits, costs, and unintended consequences. Consider the strongest counterarguments and distinguish stated goals from demonstrated outcomes.

Institutions and government scope

Conservative lens

Examine S.5559 through a conservative lens, focusing on fiscal responsibility, institutional stability, federalism, and the scope of government. Explain potential benefits, costs, and unintended consequences. Consider the strongest counterarguments and any provisions that challenge this perspective.

View full prompt & sources

Discuss S.5559, 118th Congress: A bill to amend the Act of August 9, 1955 (commonly known as the "Long-Term Leasing Act"), to authorize leases of up to 99 years for land in the Mashpee Wampanoag Tribe Reservation and land held in trust for the Wampanoag Tribe of Gay Head (Aquinnah), and for other purposes.

Official record: https://www.congress.gov/bill/118th-congress/senate-bill/5559

Text version to examine: Introduced in Senate · 2024-12-17.

Official full text: https://www.congress.gov/118/bills/s5559/BILLS-118s5559is.htm

Imported record last updated by the source: 2026-09-22T20:40:40Z. Verify current status and distinguish any later version from the version above.

Read the official text before answering. If you cannot access it, say so and ask me to provide it; do not assume a link means you have read the document. Distinguish proposals from enacted law, cite sources, and separate facts, interpretation, and uncertain predictions. Include counterarguments even when using a particular perspective.

Examine S.5559 through a conservative lens, focusing on fiscal responsibility, institutional stability, federalism, and the scope of government. Explain potential benefits, costs, and unintended consequences. Consider the strongest counterarguments and any provisions that challenge this perspective.

Individual rights and government power

Liberty lens

Examine S.5559 through a civil-liberties and limited-government lens. Consider individual rights, privacy, voluntary choice, accountability, and government power. Explain tradeoffs, possible safeguards, and the strongest counterarguments without assuming the proposal is beneficial or harmful.

View full prompt & sources

Discuss S.5559, 118th Congress: A bill to amend the Act of August 9, 1955 (commonly known as the "Long-Term Leasing Act"), to authorize leases of up to 99 years for land in the Mashpee Wampanoag Tribe Reservation and land held in trust for the Wampanoag Tribe of Gay Head (Aquinnah), and for other purposes.

Official record: https://www.congress.gov/bill/118th-congress/senate-bill/5559

Text version to examine: Introduced in Senate · 2024-12-17.

Official full text: https://www.congress.gov/118/bills/s5559/BILLS-118s5559is.htm

Imported record last updated by the source: 2026-09-22T20:40:40Z. Verify current status and distinguish any later version from the version above.

Read the official text before answering. If you cannot access it, say so and ask me to provide it; do not assume a link means you have read the document. Distinguish proposals from enacted law, cite sources, and separate facts, interpretation, and uncertain predictions. Include counterarguments even when using a particular perspective.

Examine S.5559 through a civil-liberties and limited-government lens. Consider individual rights, privacy, voluntary choice, accountability, and government power. Explain tradeoffs, possible safeguards, and the strongest counterarguments without assuming the proposal is beneficial or harmful.