“In this case, we decide whether a federal court of appeals has jurisdiction to review a district court’s order that remands a case to state court after declining to exercise supplemental jurisdiction over state-law claims under 28 U.S.C. § 1367(c).”
“The Court of Appeals for the Federal Circuit held that appellate review of such an order is barred by [28 U.S.C.] § 1447(d) because it viewed the remand order in this case as resting on the District Court’s lack of subject-matter jurisdiction over the state-law claims. We disagree and reverse the judgment of the Court of Appeals.”