While most attention has been focused on immigrants trying to enter the United States over America’s southern border, there is legal migration taking place that has been largely ignored, though it may have at least as much economic and political impact as the other. People are moving out of high-tax states to Florida and other states with lower tax burdens. Florida’s new governor, Ron DeSantis, mentioned the movement in a speech to the Club for Growth, which describes itself as “a national network of over 250,000 pro-growth, limited government Americans who share in the belief that prosperity and opportunity come...