Because of restrictive borders, human beings suffer and die. Closed borders force migrants seeking safety and dignity to journey across seas, trudge through deserts, and clamber over barbed wire. In the last five years alone, over 60,000 people have died or gone missing while attempting to cross a border. As we deny, cast out, and crack down, we have stripped borders of their potential—as lines of contact, catalyst, and blend—turning our thresholds into barricades. Brilliant and provocative, The Case for Open Borders deflates the mythology of national security through border lockdowns by revisiting their historical origins; it counters the conspiracies of immigration’s economic consequences; it urgently considers the challenges of climate change beyond the boundaries of narrow national identities. This book grounds its argument in the experiences and thinking of those on the frontlines of the crisis, spanning the world to do so. In each chapter, John Washington profiles a character impacted by borders. He adds to those portraits provocative analyses of the economics and ethics of bordering, concluding that if we are to seek justice or sustainability we must fight for open borders. In recent years, important thinkers have begun to urge a different approach to migration, but no book has made the argument as accessible or as compelling. Washington’s case shines with the voices of people on the move, a portrait of what a world with open borders will give to our common future.