A petition to close down a coal plant from the green group listed some supporters who say they hadn’t signed on. ... three western North Carolina businesses accused the green group of listing them without permission as co-signatories on a “businesses beyond coal” campaign letter. The Sierra Club listed 80 businesses as co-signatories last October in a letter it widely publicized, calling for Duke Energy to retire its coal plant in Asheville. ... National Review reached out to the remaining 61 businesses listed in the Sierra Club letter. Though it was unable to reach all of the owners, it found...