He is also an affiliated scholar with the Arkansas Center for Research in Economics. He has published several research papers and policy briefs with Mercatus on the federal and state tax systems. His research has been published in Econ Journal Watch, Public Finance and Management, the Atlantic Economic Journal, and Constitutional Political Economy. Dr. Horpedahl received his Ph.D. in Economics from George Mason University in 2009 and was a Mercatus Center Ph.D. Fellow. He has also taught at Buena Vista University in Iowa and St. Lawrence University in New York.