Last month, the Tax Foundation released the 2009 State Business Tax Climate Index, a measure of the "business-friendliness" of each state's tax system, providing a roadmap for state lawmakers concerned with keeping their states tax-competitive. In Part Three of the Tax Policy Podcast's Index Tour, we talk with Christopher Summers of the Maryland Public Policy Institute. Maryland had a large slide down our Index, going from 24th in 2008 to 45th in 2009. Chris...