Café Rojo, Ltd., an Ecuadoran firm, agrees to sell coffee beans to Dark Roast Coffee Company, a U.S. firm. Dark Roast accepts the beans but refuses to pay. Café Rojo sues Dark Roast in an Ecuadoran court and is awarded dam ages, but Dark Roast's as sets are in the United States. Under what circumstances would a U.S. court enforce the judgment of the Ecuadoran court?