History
Enforcing Foreign Judgments through Comity Principles
Quick fact
Although courts often speak of comity as a rule of international law, it is not a treaty obligation—it is a voluntary act of deference that has been recognized since Roman times and is central to cross-border legal enforcement today.
Why this is interesting
Imagine winning a legal case in one country, only to find the loser has no assets there—can you simply take the judgment across the border and collect? The answer lies in a principle called comity.
Read the full explanation
Understanding Enforcing Foreign Judgments through Comity Principles
When a court in one country issues a judgment, that judgment has no automatic power in another country. Each nation is sovereign, and its courts are only obliged to follow its own laws and procedures. However, in the interests of international cooperation and fairness, courts often choose to recognize and enforce foreign judgments. This choice is guided by the principle of comity: respect for the laws and judicial decisions of other nations, provided they are consistent with the forum's own principles of justice and public policy. Think of it like a friendly mutual agreement between neighbors: you let me walk through your backyard, and I'll let you walk through mine—but neither is legally required to do so.
A deeper explanation
Enforcing a foreign judgment under comity is a discretionary act, not an obligation. A court will typically enforce a foreign judgment if the foreign court had proper jurisdiction, the judgment was final and conclusive, and the process met basic due process standards. Crucially, the judgment must not conflict with the enforcing court's own public policy—for example, a judgment that violates fundamental rights or morality will not be enforced. This is assessed case by case, balancing the goal of international cooperation against the need to protect local legal standards. Once enforced, the foreign judgment is treated as if it were a local judgment, giving it res judicata effect—meaning the same case cannot be litigated again. The principle is rooted in the practical reality of global commerce and personal mobility, where legal disputes often span multiple jurisdictions. Without comity, winning a judgment would be meaningless if the defendant moved assets abroad.