Whether the Supreme Court had appellate jurisdiction to review the California court's application of California's arbitration-stay statute against a federal preemption challenge.
Holding
Yes. The Court had jurisdiction because Volt challenged the state statute as preempted by the FAA, and the California Court of Appeal upheld the statute's application.
Reasoning
Under the then-applicable jurisdictional statute, the Court could review a final state-court judgment that sustained a state statute against a claim that it conflicted with federal law. Volt expressly argued that § 1281.2(c), as applied to its interstate-commerce contract, violated the Supremacy Clause because it conflicted with the FAA.
It did not matter that the California court reached its result through its interpretation of the parties' contract. The state court nonetheless upheld application of the California statute against Volt's federal preemption objection, which was enough to establish appellate jurisdiction.