This bill seeks to amend the Act of August 9, 1955 , commonly known as the Long-Term Leasing Act , which governs the leasing of land held in trust for various Indian tribes. The primary purpose of this amendment is to authorize extended lease terms for lands belonging to the Mashpee Wampanoag Tribe and the Wampanoag Tribe of Gay Head (Aquinnah) . Specifically, the legislation modifies subsection (a) of the first section of the Act, adding these two tribes to the list of those permitted to enter into leases for up to 99 years . This change would provide these tribes with significantly greater flexibility for long-term planning and economic development on their reservation lands, aligning their leasing authority with that of other specified tribes under the Act.