Fei Tan Department of Economics, Saint Louis University   3674 Lindell Boulevard St. Louis, Missouri 63108-3397 United States   tanf@slu.edu   https://sites.google.com/a/slu.edu/tanf           JEL Areas: E6 : Macroeconomic Policy, Macroeconomic Aspects of Public Finance, and General C5 : Econometric Modeling: General