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.

The bill changes the 1955 Long‑Term Leasing Act so that land held in trust for the Mashpee Wampanoag Tribe and the Wampanoag Tribe of Gay Head (Aquinnah) can be leased for up to 99 years. It expands the list of tribes that may receive long‑term leases, giving these two tribes greater flexibility to develop or use their reservation lands. The change primarily affects the two tribes and any parties interested in leasing tribal trust land.