Adds clear definitions of “Indian tribe,” “Indian,” and “Indian lands” to the National Labor Relations Act. It explains who is considered an Indian or Indian tribe and which areas count as Indian lands, including reservations, trust lands, and certain lands in Oklahoma.

This change standardizes key terms used in labor relations cases that involve tribal governments or activities on tribal lands. It does not create new programs or funding and, by itself, does not expand or limit who is covered by the law; it provides definitions to guide interpretation and enforcement.