We consider under what circumstances, if any, a district judge is free to "determin[e] that three judges are not required" for an action "challenging the constitutionality of the apportionment of congressional districts."
I
A
Rare today, three-judge district courts were more common in the decades before 1976, when they were required for various adjudications, including the grant of an "interlocutory or permanent injunction restraining the enforcement, operation or execution of any State statute ... upon the ground of the unconstitutionality of such statute."
In 1976, Congress substantially curtailed the circumstances under which a three-judge court is required. It was no longer required for the grant of an injunction against state statutes, see Pub. L. 94-381, § 1,
Simultaneously, Congress amended the procedures governing three-judge district courts. The prior statute had provided: "The district judge to whom the application for injunction or other relief is presented shall constitute one member of [the three-judge] court. On the filing of the application, he shall immediately notify the chief judge of the circuit, who shall designate two other judges" to serve.
B
In response to the 2010 Census, Maryland enacted a statute in October 2011 establishing-or, more pejoratively, gerrymandering-the districts for the State's eight congressional seats. Dissatisfied with the crazy-quilt results, see App. to Pet. for Cert. 23a, petitioners, a bipartisan group of citizens, filed suit pro se in Federal District Court. Their amended complaint alleges, inter alia, that Maryland's redistricting plan burdens their First Amendment right of political association. Petitioners also requested that a three-judge court be convened to hear the case.
The District Judge, however, thought the claim "not one for which relief can be granted." Benisek v. Mack,
For that reason, instead of notifying the Chief Judge of the Circuit of the need for a three-judge court, the District Judge dismissed the action. The Fourth Circuit summarily affirmed in an unpublished disposition. Benisek v. Mack,
II
Petitioners' sole contention is that the District Judge had no authority to dismiss the case rather than initiate the procedures to convene a three-judge court. Not so, argue respondents; the 1976 addition to § 2284(b)(1) of the clause "unless he determines that three judges are not required" is precisely such a grant of authority. Moreover, say respondents, Congress declined to specify a standard to constrain the exercise of this authority. Choosing, as the District Judge did, the familiar standard for dismissal under Federal Rule of Civil Procedure 12(b)(6) best serves the purposes of a three-judge court, which (in respondents' view) is to protect States from "hasty, imprudent invalidation" of their statutes by rogue district judges acting alone. Brief for Respondents 27.
Whatever the purposes of a three-judge court may be, respondents' argument needlessly produces a contradiction in the statutory text. That text's initial prescription could not be clearer: "A district court of three judges shall be convened ... when an action is filed challenging the constitutionality of the apportionment of congressional districts...."
The subsequent provision of § 2284(b)(1), that the district judge shall commence the process for appointment of a three-judge panel "unless he determines that three judges are not required," need not and therefore should not be read as a grant of discretion to the district judge to ignore § 2284(a). It is not even framed as a proviso, or an exception from that provision, but rather as an administrative detail that is entirely compatible with § 2284(a). The old § 2284(1) triggered the district judge's duty to refer the matter for the convening of a three-judge court "[o]n the filing of the application" to enjoin an unconstitutional state law. By contrast, the current § 2284(b)(1) triggers the district judge's duty "[u]pon the filing of a request for three judges" (emphasis added). But of course a party may-whether in good faith or bad, through ignorance or hope or malice-file a request for a three-judge *455court even if the case does not merit one under § 2284(a). Section 2284(b)(1) merely clarifies that a district judge need not unthinkingly initiate the procedures to convene a three-judge court without first examining the allegations in the complaint. In short, all the district judge must "determin[e]" is whether the "request for three judges" is made in a case covered by § 2284(a) -no more, no less.
That conclusion is bolstered by § 2284(b)(3)'s explicit command that "[a] single judge shall not ... enter judgment on the merits." It would be an odd interpretation that allowed a district judge to do under § 2284(b)(1) what he is forbidden to do under § 2284(b)(3). More likely that Congress intended a three-judge court, and not a single district judge, to enter all final judgments in cases satisfying the criteria of § 2284(a).
III
Respondents argue in the alternative that a district judge is not required to refer a case for the convening of a three-judge court if the constitutional claim is (as they assert petitioners' claim to be) "insubstantial." In Goosby v. Osser,
In the present case, however, the District Judge dismissed petitioners' complaint not because he thought he lacked jurisdiction, but because he concluded that the allegations failed to state a claim for relief on the merits, citing Ashcroft v. Iqbal,
We think this standard both too demanding and inconsistent with our precedents. "[C]onstitutional claims will not lightly be found insubstantial for purposes of" the three-judge-court statute. Washington v. Confederated Tribes of Colville Reservation,
*456Bailey v. Patterson,
Without expressing any view on the merits of petitioners' claim, we believe it easily clears Goosby 's low bar; after all, the amended complaint specifically challenges Maryland's apportionment "along the lines suggested by Justice Kennedy in his concurrence in Vieth [v. Jubelirer,
* * *
The judgment of the Fourth Circuit is reversed, and the case is remanded for further proceedings consistent with this opinion.
It is so ordered.
