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.

This bill amends the 1955 Long-Term Leasing Act to allow the Mashpee Wampanoag Tribe and the Wampanoag Tribe of Gay Head (Aquinnah) to lease land held in trust for their reservations for up to 99 years. It directly affects these two tribes by expanding their existing leasing authority under the federal law. The key provision adds their specific reservations to the list of tribal lands eligible for long-term leases, replacing the previous reference to other tribes. This change modifies the legal framework for managing tribal trust lands without altering the tribes' ownership or sovereignty. The bill focuses solely on updating leasing terms for these tribes' designated reservation lands.