The Tribal Labor Sovereignty Act of 2025 aims to clarify the rights of Indian tribes and their enterprises under the National Labor Relations Act (NLRA). This legislation proposes to amend Section 2 of the NLRA, which defines who is considered an "employer" under federal labor law. The core provision of the bill is to exclude Indian tribes and any enterprise or institution owned and operated by an Indian tribe and located on its Indian lands from the NLRA's definition of "employer." This amendment would effectively exempt these tribal entities from the federal labor relations framework that governs collective bargaining and unionization. To ensure clarity in its application, the bill also establishes specific definitions for "Indian tribe," "Indian," and "Indian lands." These definitions delineate federally recognized tribes, their members, and various categories of tribal territories, including lands within reservations, trust lands, and certain lands in Oklahoma.