One of the concrete achievements of the Trump administration in the last 18 months has been the rapid removal of a great deal of existing regulation. But what kinds of regulations tend to be recommended for modification or removal? Simon F. Haeder and Susan Webb Yackee have studied the role of the Office of Information and Regulatory Affairs or OIRA in government rulemaking and find that OIRA frequently recommends changes to rules proposed by agencies which tend to lean to the left politically, such as the Environmental Protection Agency. As Trump moves to expand OIRA’s powers, they warn that this may have significant implications for policy outcomes felt across the United States for the years to come