In his latest opinion column in The Baltimore Sun, Political Science Professor Thomas Schaller responds to an op-ed he wrote last month about the Western Maryland Initiative, an effort that calls for the state’s five western-most counties to secede from the state. Schaller suggests that if people in those counties dislike Maryland’s politics, a solution is to move to a neighboring state that better reflects their ideology: Among the blessings of our federal system are the variations across the 50 states. Conservatives usually champion these differences and states’ rights; indeed, they frequently employ the “vote with your feet” metaphor to encourage persons …