Earlier this year the Governor of South Dakota did not consult tribes while planning legislation to deal with pipeline protests.
Because of that decision, the Oglala Sioux Tribe banned Kristi Noem from visiting the Pine Ridge Reservation.
Noem says tribes were left out because the proposed Keystone XL pipeline does not cross reservation land.
But a lawsuit filed in Montana federal court by the Rosebud Sioux Tribe says otherwise.
SDPB's Victoria Wicks has this report.