A recent study by the non-partisan Tax Foundation shows just how serious the out-migration of taxpayers has become. From 2000 to 2010, 66,000 residents along with $5.5 billion in taxable income left the state on net. Among the states to which Marylanders fled in large numbers were Virginia, North Carolina and Pennsylvania. Granted, people may leave a place for many reasons, including in search of warmer weather. However, that does not explain why Virginia, with its similar climate, experienced net in-migration of taxable income.