Ballot box voting is often considered the essence of political freedom. But it has two major shortcomings: individual voters have little chance of making a difference, and they also face strong incentives to remain ignorant about the issues at stake. “Voting with your feet,” avoids both of these pitfalls. In Free to Move, Ilya Somin explains how broadening opportunities for foot voting can greatly enhance political liberty for millions around the world. Somin addresses common objections to expanded migration rights, including claims that the “self-determination” of natives requires giving them the power to exclude migrants, and arguments that migration is likely to have harmful side effects. By making a systematic case for a more open world, Free to Move challenges conventional wisdom on both the left and the right.