opinion juris sive necessitates

There have been attempts to codify through treaties or multilateral agreements the standards for the recognition and enforcement of foreign judgments, but these have not borne fruition. The members of the European Common Market accede to the Judgments Convention, signed in 1978, which eliminates as to participating countries all of such obstacles to recognition such as reciprocity and révision au fond.⁵³ The most ambitious of these attempts is the Convention on the Recognition and Enforcement of Foreign Judgments in Civil and Commercial Matters, prepared in 1966 by the Hague Conference of International Law.⁵⁴ While it has not received the ratifications needed to have it take effect,⁵⁵ it is recognized as representing current scholarly thought on the topic.⁵⁶ Neither the Philippines nor the United States are signatories to the Convention.

Yet even if there is no unanimity as to the applicable theory behind the recognition and enforcement of foreign judgments or a universal treaty rendering it obligatory force, there is consensus that the viability of such recognition and enforcement is essential. Steiner and Vagts note:

.  .  . The notion of unconnected bodies of national law on private international law, each following a quite separate path, is not one conducive to the growth of a transnational community encouraging travel and commerce among its members. There is a contemporary resurgence of writing stressing the identity or similarity of the values that systems of public and private international law seek to further – a community interest in common, or at least reasonable, rules on these matters in national legal systems. And such generic principles as reciprocity play an important role in both fields.⁵⁷

Salonga, whose treatise on private international law is of worldwide renown, points out:

Whatever be the theory as to the basis for recognizing foreign judgments, there can be little dispute that the end is to protect the reasonable expectations and demands of the parties. Where the parties have submitted a matter for adjudication in the court of one state, and proceedings there are not tainted with irregularity, they may fairly be expected to submit, within the state or elsewhere, to the enforcement of the judgment issued by the court.⁵⁸

There is also consensus as to the requisites for recognition of a foreign judgment and the defenses against the enforcement thereof. As earlier discussed, the exceptions enumerated in Section 48, Rule 39 have remain unchanged since the time they were adapted in this jurisdiction from long standing American rules. The requisites and exceptions as delineated under Section 48 are but a restatement of generally accepted principles of international law. Section 98 of The Restatement, Second, Conflict of Laws, states that "a valid judgment rendered in a foreign nation after a fair trial in a contested proceeding will be recognized in the United States," and on its face, the term "valid" brings into play requirements such notions as valid jurisdiction over the subject matter and parties.⁵⁹ Similarly, the notion that fraud or collusion may preclude the enforcement of a foreign judgment finds affirmation with foreign jurisprudence and commentators,⁶⁰ as well as the doctrine that the foreign judgment must not constitute "a clear mistake of law or fact."⁶¹ And finally, it has been recognized that "public policy" as a defense to the recognition of judgments serves as an umbrella for a variety of concerns in international practice which may lead to a denial of recognition.⁶²

The viability of the public policy defense against the enforcement of a foreign judgment has been recognized in this jurisdiction.⁶³ This defense allows for the application of local standards in reviewing the foreign judgment, especially when such judgment creates only a presumptive right, as it does in cases wherein the judgment is against a person.⁶⁴ The defense is also recognized within the international sphere, as many civil law nations adhere to a broad public policy exception which may result in a denial of recognition when the foreign court, in the light of the choice-of-law rules of the recognizing court, applied the wrong law to the case.⁶⁵ The public policy defense can safeguard against possible abuses to the easy resort to offshore litigation if it can be demonstrated that the original claim is noxious to our constitutional values.

There is no obligatory rule derived from treaties or conventions that requires the Philippines to recognize foreign judgments, or allow a procedure for the enforcement thereof.  However, generally accepted principles of international law, by virtue of the incorporation clause of the Constitution, form part of the laws of the land even if they do not derive from treaty obligations.⁶⁶ The classical formulation in international law sees those customary rules accepted as binding result from the combination two elements: the established, widespread, and consistent practice on the part of States; and a psychological element known as the opinion juris sive necessitates (opinion as to law or necessity). Implicit in the latter element is a belief that the practice in question is rendered obligatory by the existence of a rule of law requiring it.⁶⁷

While the definite conceptual parameters of the recognition and enforcement of foreign judgments have not been authoritatively established, the Court can assert with certainty that such an undertaking is among those generally accepted principles of international law.⁶⁸ As earlier demonstrated, there is a widespread practice among states accepting in principle the need for such recognition and enforcement, albeit subject to limitations of varying degrees. The fact that there is no binding universal treaty governing the practice is not indicative of a widespread rejection of the principle, but only a disagreement as to the imposable specific rules governing the procedure for recognition and enforcement.

Aside from the widespread practice, it is indubitable that the procedure for recognition and enforcement is embodied in the rules of law, whether statutory or jurisprudential, adopted in various foreign jurisdictions. In the Philippines, this is evidenced primarily by Section 48, Rule 39 of the Rules of Court which has existed in its current form since the early 1900s. Certainly, the Philippine legal system has long ago accepted into its jurisprudence and procedural rules the viability of an action for enforcement of foreign judgment, as well as the requisites for such valid enforcement, as derived from internationally accepted doctrines.  Again, there may be distinctions as to the rules adopted by each particular state,⁶⁹ but they all prescind from the premise that there is a rule of law obliging states to allow for, however generally, the recognition and enforcement of a foreign judgment. The bare principle, to our mind, has attained the status of opinio juris in international practice.