The chiefs say Ottawa has failed to meet with them despite repeated attempts to initiate dialogue, and denied their request for a carbon tax exemption.
The text of the agreement states that Canada and Ukraine will 'promote carbon pricing' and 'measures to mitigate carbon leakage risks,' among other things.
The bill introduced in the legislature on Nov. 16 would also protect Crown corporation SaskEnergy from any legal consequences of not remitting the carbon tax.