28 USC 1605 - General exceptions to the jurisdictional immunity of a foreign state

(a) A foreign state shall not be immune from the jurisdiction of courts of the United States or of the States in any case
(1) in which the foreign state has waived its immunity either explicitly or by implication, notwithstanding any withdrawal of the waiver which the foreign state may purport to effect except in accordance with the terms of the waiver;
(2) in which the action is based upon a commercial activity carried on in the United States by the foreign state; or upon an act performed in the United States in connection with a commercial activity of the foreign state elsewhere; or upon an act outside the territory of the United States in connection with a commercial activity of the foreign state elsewhere and that act causes a direct effect in the United States;
(3) in which rights in property taken in violation of international law are in issue and that property or any property exchanged for such property is present in the United States in connection with a commercial activity carried on in the United States by the foreign state; or that property or any property exchanged for such property is owned or operated by an agency or instrumentality of the foreign state and that agency or instrumentality is engaged in a commercial activity in the United States;
(4) in which rights in property in the United States acquired by succession or gift or rights in immovable property situated in the United States are in issue;
(5) not otherwise encompassed in paragraph (2) above, in which money damages are sought against a foreign state for personal injury or death, or damage to or loss of property, occurring in the United States and caused by the tortious act or omission of that foreign state or of any official or employee of that foreign state while acting within the scope of his office or employment; except this paragraph shall not apply to
(A) any claim based upon the exercise or performance or the failure to exercise or perform a discretionary function regardless of whether the discretion be abused, or
(B) any claim arising out of malicious prosecution, abuse of process, libel, slander, misrepresentation, deceit, or interference with contract rights;
(6) in which the action is brought, either to enforce an agreement made by the foreign state with or for the benefit of a private party to submit to arbitration all or any differences which have arisen or which may arise between the parties with respect to a defined legal relationship, whether contractual or not, concerning a subject matter capable of settlement by arbitration under the laws of the United States, or to confirm an award made pursuant to such an agreement to arbitrate, if
(A)  the arbitration takes place or is intended to take place in the United States,
(B)  the agreement or award is or may be governed by a treaty or other international agreement in force for the United States calling for the recognition and enforcement of arbitral awards,
(C)  the underlying claim, save for the agreement to arbitrate, could have been brought in a United States court under this section or section 1607, or (D) paragraph (1) of this subsection is otherwise applicable; or
(7) not otherwise covered by paragraph (2), in which money damages are sought against a foreign state for personal injury or death that was caused by an act of torture, extrajudicial killing, aircraft sabotage, hostage taking, or the provision of material support or resources (as defined in section 2339A of title 18) for such an act if such act or provision of material support is engaged in by an official, employee, or agent of such foreign state while acting within the scope of his or her office, employment, or agency, except that the court shall decline to hear a claim under this paragraph
(A) if the foreign state was not designated as a state sponsor of terrorism under section 6(j) of the Export Administration Act of 1979 (50 App. U.S.C. 2405 (j)) or section 620A of the Foreign Assistance Act of 1961 (22 U.S.C. 2371) at the time the act occurred, unless later so designated as a result of such act or the act is related to Case Number 1:00CV03110(EGS) in the United States District Court for the District of Columbia; and
(B) even if the foreign state is or was so designated, if
(i) the act occurred in the foreign state against which the claim has been brought and the claimant has not afforded the foreign state a reasonable opportunity to arbitrate the claim in accordance with accepted international rules of arbitration; or
(ii) neither the claimant nor the victim was a national of the United States (as that term is defined in section 101(a)(22) of the Immigration and Nationality Act) when the act upon which the claim is based occurred.
(b) A foreign state shall not be immune from the jurisdiction of the courts of the United States in any case in which a suit in admiralty is brought to enforce a maritime lien against a vessel or cargo of the foreign state, which maritime lien is based upon a commercial activity of the foreign state: Provided, That
(1) notice of the suit is given by delivery of a copy of the summons and of the complaint to the person, or his agent, having possession of the vessel or cargo against which the maritime lien is asserted; and if the vessel or cargo is arrested pursuant to process obtained on behalf of the party bringing the suit, the service of process of arrest shall be deemed to constitute valid delivery of such notice, but the party bringing the suit shall be liable for any damages sustained by the foreign state as a result of the arrest if the party bringing the suit had actual or constructive knowledge that the vessel or cargo of a foreign state was involved; and
(2) notice to the foreign state of the commencement of suit as provided in section 1608 of this title is initiated within ten days either of the delivery of notice as provided in paragraph (1) of this subsection or, in the case of a party who was unaware that the vessel or cargo of a foreign state was involved, of the date such party determined the existence of the foreign states interest.
(c) Whenever notice is delivered under subsection (b)(1), the suit to enforce a maritime lien shall thereafter proceed and shall be heard and determined according to the principles of law and rules of practice of suits in rem whenever it appears that, had the vessel been privately owned and possessed, a suit in rem might have been maintained. A decree against the foreign state may include costs of the suit and, if the decree is for a money judgment, interest as ordered by the court, except that the court may not award judgment against the foreign state in an amount greater than the value of the vessel or cargo upon which the maritime lien arose. Such value shall be determined as of the time notice is served under subsection (b)(1). Decrees shall be subject to appeal and revision as provided in other cases of admiralty and maritime jurisdiction. Nothing shall preclude the plaintiff in any proper case from seeking relief in personam in the same action brought to enforce a maritime lien as provided in this section.
(d) A foreign state shall not be immune from the jurisdiction of the courts of the United States in any action brought to foreclose a preferred mortgage, as defined in section 31301 of title 46. Such action shall be brought, heard, and determined in accordance with the provisions of chapter 313 of title 46 and in accordance with the principles of law and rules of practice of suits in rem, whenever it appears that had the vessel been privately owned and possessed a suit in rem might have been maintained.
(e) For purposes of paragraph (7) of subsection (a)
(1) the terms torture and extrajudicial killing have the meaning given those terms in section 3 of the Torture Victim Protection Act of 1991;
(2) the term hostage taking has the meaning given that term in Article 1 of the International Convention Against the Taking of Hostages; and
(3) the term aircraft sabotage has the meaning given that term in Article 1 of the Convention for the Suppression of Unlawful Acts Against the Safety of Civil Aviation.
(f) No action shall be maintained under subsection (a)(7) unless the action is commenced not later than 10 years after the date on which the cause of action arose. All principles of equitable tolling, including the period during which the foreign state was immune from suit, shall apply in calculating this limitation period.
(g) Limitation on Discovery.— 

(1) In general.— 

(A) Subject to paragraph (2), if an action is filed that would otherwise be barred by section 1604, but for subsection (a)(7), the court, upon request of the Attorney General, shall stay any request, demand, or order for discovery on the United States that the Attorney General certifies would significantly interfere with a criminal investigation or prosecution, or a national security operation, related to the incident that gave rise to the cause of action, until such time as the Attorney General advises the court that such request, demand, or order will no longer so interfere.
(B) A stay under this paragraph shall be in effect during the 12-month period beginning on the date on which the court issues the order to stay discovery. The court shall renew the order to stay discovery for additional 12-month periods upon motion by the United States if the Attorney General certifies that discovery would significantly interfere with a criminal investigation or prosecution, or a national security operation, related to the incident that gave rise to the cause of action.
(2) Sunset.— 

(A) Subject to subparagraph (B), no stay shall be granted or continued in effect under paragraph (1) after the date that is 10 years after the date on which the incident that gave rise to the cause of action occurred.
(B) After the period referred to in subparagraph (A), the court, upon request of the Attorney General, may stay any request, demand, or order for discovery on the United States that the court finds a substantial likelihood would
(i) create a serious threat of death or serious bodily injury to any person;
(ii) adversely affect the ability of the United States to work in cooperation with foreign and international law enforcement agencies in investigating violations of United States law; or
(iii) obstruct the criminal case related to the incident that gave rise to the cause of action or undermine the potential for a conviction in such case.
(3) Evaluation of evidence.— 
The courts evaluation of any request for a stay under this subsection filed by the Attorney General shall be conducted ex parte and in camera.
(4) Bar on motions to dismiss.— 
A stay of discovery under this subsection shall constitute a bar to the granting of a motion to dismiss under rules 12(b)(6) and 56 of the Federal Rules of Civil Procedure.
(5) Construction.— 
Nothing in this subsection shall prevent the United States from seeking protective orders or asserting privileges ordinarily available to the United States.