Since 9/11 the watchword in the debate over immigration reform has been “security.” As a result, most policymakers and pundits now approach the subject of immigration largely from a law-enforcement perspective. However, the current border-enforcement strategy, which tends to lump together terrorists and undocumented jobseekers from abroad as groups to be kept out, ignores the causes of undocumented immigration and fuels the expansion of the people-smuggling networks through which a foreign terrorist might enter the country.