This document is the Reply Brief for the Petitioner, the Kingdom of Spain, filed in the Supreme Court of the United States in support of its Petition for a Writ of Certiorari. The brief urges the Court to review a decision by the U.S. Court of Appeals for the District of Columbia Circuit concerning the enforcement of an arbitral award against Spain.

Key Issues Presented for Review

The brief argues for Supreme Court review based on two asserted circuit splits of exceptional importance to foreign sovereigns and U.S. foreign policy.

The first issue concerns the scope of the arbitration exception to the Foreign Sovereign Immunities Act (FSIA), 28 U.S.C. § 1605(a)(6). Spain contends that the D.C. Circuit erred by holding that a court can exercise subject-matter jurisdiction without first determining whether the sovereign consented to arbitrate "differences... between the parties" to the specific court action. Spain argues this approach, which treats the identity of the consenting parties as a non-jurisdictional merits question, directly conflicts with decisions from the Second and Fifth Circuits that treat consent as a threshold jurisdictional requirement. Spain asserts that the D.C. Circuit's rule improperly subjects sovereigns to burdensome discovery and litigation before their immunity is decided.

The second issue addresses the availability of the doctrine of forum non conveniens in actions to confirm foreign arbitral awards. Spain argues that the D.C. Circuit's categorical rule prohibiting the application of forum non conveniens in such cases deepens a circuit split. Spain posits that this prohibition encourages forum shopping, mires U.S. courts in complex foreign law disputes, and risks subjecting sovereigns to inconsistent obligations, thereby creating international friction.

Relief Sought

The Petitioner respectfully requests that the Court grant the petition for a writ of certiorari to resolve these critical and recurring questions of federal law.