Stanford University - Department of Economics, University of California, Irvine - Department of Economics, Stanford University - Department of Economics, Technology Policy Institute, University of California, Santa Barbara (UCSB) - Department of Economics, American Enterprise Institute (AEI), affiliation not provided to SSRN, Columbia University - School of International & Public Affairs (SIPA), Stanford University - Department of Economics and Marsh & McLennan Companies - Washington, D.C. Office

George Washington University, Washington University in St. Louis - D.C. Satellite Office, University of Kentucky - Department of Economics, affiliation not provided to SSRN, George Washington University - Trachtenberg School of Public Policy and Public Administration, George Washington Institute of Public Policy (GWIP), Cox Associates, Inc., Resources for the Future, Indiana University, George Washington University, Harvard University, Indiana University Bloomington - School of Public & Environmental Affairs (SPEA), University of Virginia - Frank Batten School of Leadership and Public Policy, George Washington University, Rutgers, The State University of New Jersey - Edward J. Bloustein School of Planning and Public Policy, Marsh & McLennan Companies - Washington, D.C. Office, Vanderbilt University - Law School and University of Washington - Daniel J. Evans School of Public Affairs