Another crack in the sovereignty dam.
Organized labor managed an increasingly rare feat on Monday — a political victory — when its allies turned back a Senate measure aimed at rolling back labor rights on tribal lands.
The legislation, called the Tribal Labor Sovereignty Act, would have exempted enterprises owned and operated by Native American tribes from federal labor standards, even for employees who were not tribal citizens.
The A.F.L.-C.I.O. said passage of the measure, the subject of several years of tribal lobbying, would have amounted to the most aggressive erosion of labor protections since 1940s.
A package of bills containing the measure fell five votes short of the 60 needed to break a filibuster.