The U.S. Environmental Protection Agency is about to begin reviewing the federal limits for six air pollutants that affect the health of millions of Americans. But leading the effort is none other than Tony Cox—an industry consultant who has previously received funding from the American Petroleum Institute and who even allowed the fossil fuel lobbying group to proofread his findings before publication, a very taboo move. (Reminder: The fossil fuel industry is one of the biggest contributors of air pollution.) Nominated by dethroned EPA administrator Scott Pruitt, Cox currently serves as chairman of the Clean Air Scientific Advisory Committee and has publicly denied the proven negative impact of smog on human health. While Cox claims no significant edits were made to his previous study, his actions call into question the integrity of his work and threaten independent science at the EPA—yet again.