A veritable avalanche of writings by libertarians I know and respect offer claims about libertarianism, immigration, and open borders. Apparently as a libertarian, I believe that countries should not limit entrance and exit across geographic boundaries. Alex Tabarrok says the argument is economic and “moral” because “law makers and heads of state,” and presumably misinformed citizens, prevent someone from immigrating in pursuit of work. According to Bryan Caplan, we could double our economic productivity with open borders and address concerns by limiting access to welfare until a threshold of tax payment is reached (a la Milton Friedman). Michael Huemer believes we are not entitled to limit access to valuable resources or to act on the aggregate preferences of citizens, since such policies may harm potential immigrants.