Governor Kristi Noem and six of her fellow Republican governors sent a letter to the Southwest Power Pool expressing concern about the federal government implementing a “Good Neighbor Plan” that would govern the interstate transportation of emissions while ignoring state-designed plans that are already in place. The governors wrote that the U.S. Environmental Protection Agency’s proposed rule would implement additional compliance obligations on coal and gas-fired power plants in less than a year. They also wrote that the federal proposal would be costly to the states and difficult to implement. The governors said the federal government has ignored similar plans created by the states that have worked.