The agency is now routinely determining that the benefits of reducing air pollution are too uncertain to quantify or value at all. But, beginning this year, EPA administrator Lee Zeldin has decided that every health benefit from air pollution reductions is too uncertain to count—and every regulatory cost dispositive. It similarly did not consider these adverse health consequences in an air pollution regulation for coal and oil power plants, another air pollution regulation for wood products, and, earlier this month, in relaxing emissions test procedures for heavy-duty vehicles. On the cost side of its regulatory analysis, the EPA’s approach is entirely different. Because there is no “big ticket” action like last year’s questioning of climate change, the EPA’s approach has largely gone under the radar.