Code Civ. Proc., § 1716

(a) Except as otherwise provided in subdivisions (b), (c), (d), and (f), a court of this state shall recognize a foreign-country judgment to which this chapter applies.

(b) A court of this state shall not recognize a foreign-country judgment if any of the following apply:

(1) The judgment was rendered under a judicial system that does not provide impartial tribunals or procedures compatible with the requirements of due process of law.

(2) The foreign court did not have personal jurisdiction over the defendant.

(3) The foreign court did not have jurisdiction over the subject matter.

(c) (1) A court of this state shall not recognize a foreign-country judgment if any of the following apply:

(A) The defendant in the proceeding in the foreign court did not receive notice of the proceeding in sufficient time to enable the defendant to defend.

(B) The judgment was obtained by fraud that deprived the losing party of an adequate opportunity to present its case.

(C) The judgment or the cause of action or claim for relief on which the judgment is based is repugnant to the public policy of this state or of the United States.

(D) The proceeding in the foreign court was contrary to an agreement between the parties under which the dispute in question was to be determined otherwise than by proceedings in that foreign court.

(E) In the case of jurisdiction based only on personal service, the foreign court was a seriously inconvenient forum for the trial of the action.

(F) The judgment was rendered in circumstances that raise substantial doubt about the integrity of the rendering court with respect to the judgment.

(G) The specific proceeding in the foreign court leading to the judgment was not compatible with the requirements of due process of law.

(2) Notwithstanding an applicable ground for nonrecognition under paragraph (1), the court may nonetheless recognize a foreign-country judgment if the party seeking recognition of the judgment demonstrates good reason to recognize the judgment that outweighs the ground for nonrecognition.

(d) A court of this state is not required to recognize a foreign-country judgment if the judgment conflicts with another final and conclusive judgment.

(e) If the party seeking recognition of a foreign-country judgment has met its burden of establishing recognition of the foreign-country judgment pursuant to subdivision (c) of Section 1715, a party resisting recognition of a foreign-country judgment has the burden of establishing that a ground for nonrecognition stated in subdivision (b), (c), or (d) exists.

(f) A court of this state shall not recognize a foreign-country judgment for defamation if that judgment is not recognizable under Section 4102 of Title 28 of the United States Code.