He is a graduate of Carleton College, and holds a Masters Degree in Political Science from Duke University. He has taught political philosophy at Duke University, North Carolina State University, Carleton College, and the University of St. Thomas. David's work at the Taxpayers League began in 1997 when the organization was formed as a 501(c)4 non-profit, and he became President in January of 2004. He now runs the newly rebranded Minnesota Free Market Institute. which does research, publishes pamphlets and papers, and holds forums educating citizens regarding the importance of free market principles to liberty and prosperity.