Rigorous economic analysis has long been recognized as essential for sound, defensible decision-making by government agencies whose regulations affect human health and the environment. The acting administrator (since July 2018) of the U.S. Environmental Protection Agency (EPA) has emphasized the importance of transparency and public trust. These laudable goals are enhanced by external scientific review of the EPA's analytical procedures. Yet, in June 2018, the EPA's Science Advisory Board (SAB) eliminated its Environmental Economics Advisory Committee (EEAC). The agency should be calling for more—not less—external advice on economics, given the Trump administration's promotion of economic analyses that push the boundaries of well-established best practices. The pattern is clear: When environmental regulations are expected to provide substantial public benefits, assumptions are made to substantially diminish their valuations.