But that this is exactly what the advocates of the "propositional nation" do insist upon. The United States is not only the best nation in the history of the world, but also it is the beacon to all mankind, the natural home of all the good and decent people in the world and the enemy to all regimes that deny their subjects equal rights. Thus, by the same argument, a propositional nation is obliged to open its borders to strangers "yearning to breathe free," but it is also justified in engaging in endless crusades to impose its propositions on the rest of the world.