What if a nation's borders are not just gates to keep people out, but security doors shielding a stolen fortune?
While the debate between open and closed borders often treats countries as independent islands, history tells a different story. If Country A invades, colonizes, or economically destabilizes Country B, the relationship between them ceases to be a meeting of strangers. It becomes a relationship of debtor and creditor. This perspective shifts the immigration debate from one of *charity* to one of *corrective justice*.
## The Pottery Barn Rule of Global Politics
In foreign policy, informal thinkers often refer to the "Pottery Barn rule": *you break it, you bought it*. In political philosophy, this is known as **rectificatory justice**—the idea that if you cause harm to someone, you have a moral duty to repair that harm.
Philosopher [Catherine Lu](https://www.mcgill.ca/politicalscience/catherine-lu), in her book *Justice and Reconciliation in World Politics*, explores how colonial legacies and structural injustices create ongoing responsibilities for powerful nations. When a wealthy nation has historically exploited a poorer nation's resources, overthrown its government, or disrupted its economy, simple charity is not enough.
> "Colonial Wall Street and European capitals were built on wealth extracted from the global South. To deny entry to the descendants of those who produced that wealth is not just a refusal of entry; it is a refusal to pay a debt."
From this viewpoint, allowing immigration is a form of restitution. The immigrant is not a guest asking for a favor, but a collector retrieving a share of the wealth their ancestors helped build.
## The Colonial Connection: France and Algeria
To see this mechanism in action, we can look at the historical relationship between France and Algeria. For over a century, France colonized Algeria, extracting resources and restructuring its society. When Algeria gained independence in 1962 after a brutal war, the economic and social ties did not simply vanish.
Sociologist [Abdelmalek Sayad](https://en.wikipedia.org/wiki/Abdelmalek_Sayad), in his seminal work *The Suffering of the Immigrant*, argued that post-colonial migration is a direct mirror image of colonization. The colonized move toward the center of the empire that reshaped their homeland.
When a wealthy nation asks, "Why do they want to come here?" the historical answer is often, "Because you were there."
## The Counterargument: The "Clean Hands" Dilemma
This argument of historical liability raises a difficult philosophical counter-question: Can current generations be held morally responsible for the sins of their ancestors?
Philosophers who defend national self-determination argue that young citizens today did not choose the colonial policies of the 19th century. Holding a modern taxpayer responsible for historical wrongs committed before they were born may violate the principle of individual moral responsibility.
Additionally, tracking historical causation is incredibly complex. If a country is unstable today, how much of that is due to 19th-century colonialism, and how much is due to modern domestic governance? Because isolating a single cause is nearly impossible, critics argue that immigration policy is too blunt an instrument to serve as a tool for historical reparations.
Ultimately, this debate forces us to look at a passport not just as a document of citizenship, but as a receipt. It asks whether wealthy nations can enjoy the compound interest of historical exploitation while locking the gates against those who paid the original price.