court scarcely means that whenever the district court misconstrues a jurisdictional statute, appellate review of the remand is in order. Such an exception would, of course, collide head on with § 1447(d), and with our precedent. See, e. g., Things Remembered, Inc. v. Petrarca, 516 U. S. 124, 127-128 (1995). Only in the extraordinary case in which Congress has ordered the intercourt shuttle to travel just one way— from state to federal court — does today’s decision hold sway.
In short, of the two antishuttling commands, § 1447(d) and § 2679(d)(2), only one can prevail. We hold that § 2679(d)(2) controls. Tailor-made for Westfall Act eases, § 2679(d)(2) is a forum-selecting rule Congress made “conclusive,” beyond the ken of district courts to revise. See Thermtron, 423 U. S., at 351.
C
In Lamagno, the Court considered, but did not definitively resolve, the question whether Article III permits “[tjreating the Attorney General’s certification as conclusive for purposes of removal but not for purposes of substitution.” 515 U. S., at 434. It was argued in that case that if certification is rejected and substitution denied “because the federal court concludes that the employee acted outside the scope of his employment, and if the tort plaintiff and the [defendant-employee] are not of diverse citizenship,... then the federal court will be left with a case without a federal question to support the court’s subject-matter jurisdiction.” Id., at 434-435. Lamagno was an action commenced in federal court on the basis of diversity of citizenship, so there was in that case “not even the specter of an Article III problem.” Id., at 435.
In the case before us, the question would arise only if, after full consideration, the District Court determines that Haley in fact engaged in the tortious conduct outside the scope of his employment charged in Osborn’s complaint. At that point, however, little would be left to adjudicate, at least as to Haley’s liability. Because a significant federal question