The United States is the biggest free-trade and open-immigration nation in history. Every day, countless people cross state and county borders without any control, regulation, or restriction. No state officials are stationed at state borders to check people’s travel papers or to ask about why they are entering the state. No customs officials or drug-war officials are stationed at state border crossings to search people and their vehicles for drugs or other contraband. No travel visas are required to go … Continue reading What If the U.S. Had Trade and Immigration Controls?