He has said he is “not at all ashamed” of his lobbying for Murray Energy Corp, the nation’s leading underground coal mining company, the focus of criticism by environmentalists.
Wheeler had also lobbied for utility Xcel Energy Inc and consulted for biofuels industry group Growth Energy, agricultural merchant and biofuels producer Archer Daniels Midland Co., and International Paper Co.
https://www.cbc.ca/news/world/trump-epa-wheeler-lobbyist-1.4971717