*Professor of Business Economics and Public Policy, University of Michigan Business School
*Director, Office of Tax Policy Research, University of Michigan Business School
*Contributing Editor, State Tax Notes magazine
*Adjunct Professor of Law, George Washington University
*Member of the Maryland House of Delegates
Iowa, Maryland, Washington, D.C. and five other states are giving residents a reason to shop this month. They're offering residents a few days in which to shop sales tax-free. And some 17 other states have considered similar tax holidays. Juan Williams talks with tax experts about sales tax holidays. Are they a good idea?