Comity

In law, comity is "a principle or practice among political entities such as countries, states, or courts of different jurisdictions, whereby legislative, executive, and judicial acts are mutually recognized." It is an informal and non-mandatory courtesy to which a court of one jurisdiction affords to the court of another jurisdiction when determining questions where the law or interests of another country are involved. Comity is founded on the concept of sovereign equality among states and is expected to be reciprocal.