Oklahoma pursuing Environmental Authority Act to block EPA:

Bill: HB1240 (text)

This bill would create the Oklahoma Environmental Authority Act, making legislative declaration that certain environmental regulation activities are not subject to federal laws or regulation; authorizing state environmental agencies to cooperate with federal environmental agencies; prohibiting enforcement of certain federal laws and regulations; declaring certain federal laws to be invalid and to have no effect; establishing penalty for certain officials and employees for certain acts; providing for codification.

Also: “Cap & Trade Nullification”