OPINION OF THE COURT

POLLAK, District Judge.

Appellants in this case seek to represent a putative class of aliens who are detained, pursuant to 8 U.S.C. § 1226(c), pending their removal proceedings. The class complaint, filed in the United States District Court for the Middle District of Pennsylvania, sought a declaratory judgment that the continued detention of the class members, without bond hearings, violates the Immigration and Nationality Act (INA) and the Due Process Clause of the Fifth Amendment. The District Court denied the class certification motion and dismissed the class complaint, finding that 8 U.S.C. § 1252(f)(1) deprived the court of subject matter jurisdiction to entertain an application for declaratory relief on behalf of the plaintiff class. Section 1252(f)(1) precludes class actions that seek to "enjoin or restrain the operation of" several immigration statutes, including 8 U.S.C. § 1226(c). The District Court concluded that "restrain" encompasses declaratory relief. We reverse.

I.

Appellants Alexander Alli and Elliot Grenade are lawful permanent residents whom the government deems removable from the United States as a result of past criminal convictions. See 8 U.S.C. § 1182(a)(2). Appellants were detained pursuant to 8 U.S.C. § 1226(c),1 which provides that the Attorney General "shall take into custody any alien who ... is deportable by reason of having committed" certain enumerated offenses.2

After Alli and Grenade had been detained for, respectively, 9 months and 20 months, they filed a combined habeas petition and civil complaint alleging that their continued detention violated the INA and the Due Process Clause. They sought, inter alia, an order directing the government to provide them with a bond hearing. In addition to their individual claims, appellants sought to represent a class of lawful permanent residents residing in Pennsylvania or, in the alternative, in the Middle District of Pennsylvania, who had been or would be detained without hearing, pursuant to § 1226(c), for over six months. The putative class sought a declaration that the failure to afford such a hearing violates the INA and the Due Process Clause.

The District Court granted appellants' individual petitions but refused to consider their class claims, finding that 8 U.S.C. § 1252(f)(1) stripped it of jurisdiction to entertain a class action requesting declaratory relief. The government did not appeal the ruling on the individual petitions, but appellants sought review of the class decision.

II.

A.

The District Court had jurisdiction under 28 U.S.C. § 1331 and 28 U.S.C. § 2241. We exercise jurisdiction under 28 U.S.C. § 1291, and we exercise plenary review over legal conclusions associated with orders dismissing claims for lack of subject matter jurisdiction. White-Squire v. U.S. Postal Serv., 592 F.3d 453, 456 (3d Cir.2010).

Although not raised by either party, we briefly address a procedural wrinkle that implicates the mootness doctrine. The District Court denied appellants' motion for class certification on August 10, 2009. Dkt. 56. In the same order, the District Court dismissed the portions of appellants' complaint and habeas petition that sought class relief. But on January 26, 2010, the District Court ruled that both of appellants' detentions were unreasonably prolonged, and thus ordered individualized bond hearings for each appellant.3 Dkt. 88. Accordingly, appellants no longer have a personal stake in the merits of the class claim. Nevertheless, because the denial of class certification occurred when appellants' individual claims were still live, their appeal is not moot. See U.S. Parole Comm'n v. Geraghty, 445 U.S. 388, 404, 100 S.Ct. 1202, 63 L.Ed.2d 479 (1980) ("[A]n action brought on behalf of a class does not become moot upon expiration of the named plaintiff's substantive claim, even though class certification has been denied."); Rosetti v. Shalala, 12 F.3d 1216, 1226 (3d Cir.1993) ("[A] federal appellate court retains jurisdiction over a named plaintiff's challenge to a denial of class certification, even if the plaintiff has not maintained a personal stake in the outcome of the litigation since that decision."). We may therefore review the District Court's conclusion that § 1252(f)(1) deprived it of jurisdiction to certify appellants' class claim for declaratory relief.

B.

Section 1252(f)(1) provides:

At issue in this case is whether the term "restrain," in 1252(f)(1), encompasses, and thus bars, appellants' class claim for declaratory relief regarding § 1226(c)5 detention practices.6

The parties agree that use of the disjunctive "or" demands that "restrain" have some meaning other than "enjoin." See Chalmers v. Shalala, 23 F.3d 752, 755 (3d Cir.1994) ("We see no basis to construe the disjunctive `or' in any way other than its plain meaning...."); see also Rosenberg v. XM Ventures, 274 F.3d 137, 141 (3d Cir.2001) ("[W]hen interpreting a statute, courts should endeavor to give meaning to every word which Congress used and therefore should avoid an interpretation which renders an element of the language superfluous.").

But the parties dispute what we may and may not consider in construing the statute. Appellants argue that the meaning of "restrain" may be derived by reference to the statute's context (including neighboring provisions), while the government contends that resort to statutory context is only appropriate where the term in question is ambiguous. The government claims (and the District Court found) that "restrain" is not ambiguous, but merely broad, and thus that it is improper to consult the provision's context. See Appellees' Br. at 31 ("Ambiguity ... may [not] be read into a statutory term or phrase simply because Congress used a different term or phrase in another part of the same statute."); Alli v. Decker, 644 F.Supp.2d 535, 549 (M.D.Pa.2009) ("That Congress employed different language in another portion of the statute does not change [the] plain meaning [of `restrain'].").

It is true that "[w]here the statutory language is unambiguous, the court should not consider statutory purpose or legislative history," Parker v. NutriSystem, Inc., 620 F.3d 274, 277 (3d Cir.2010), and that "`the title of a statute ... cannot limit the plain meaning of the text,'" Dep't of Corrections v. Yeskey, 524 U.S. 206, 212, 118 S.Ct. 1952, 141 L.Ed.2d 215 (1998) (quoting Trainmen v. Baltimore & Ohio R. Co., 331 U.S. 519, 528-29, 67 S.Ct. 1387, 91 L.Ed. 1646 (1947)). But neither the government nor the District Court has cited to any authority that requires a court to ignore other provisions within a statute when making the threshold ambiguity determination.7 Indeed, "[t]he Supreme Court has stated consistently that the text of a statute must be considered in the larger context or structure of the statute in which it is found." United States v. Tupone, 442 F.3d 145, 151 (3d Cir.2006); see also FDA v. Brown & Williamson Tobacco Corp., 529 U.S. 120, 132, 120 S.Ct. 1291, 146 L.Ed.2d 121 (2000) ("In determining whether Congress has specifically addressed the question at issue, a reviewing court should not confine itself to examining a particular statutory provision in isolation. The meaning — or ambiguity — of certain words or phrases may only become evident when placed in context."). Accordingly, the District Court's approach to discerning the existence of ambiguity — an approach based on dictionary definitions — was insufficient. See Brown v. Gardner, 513 U.S. 115, 118, 115 S.Ct. 552, 130 L.Ed.2d 462 (1994) ("Ambiguity is a creature not of definitional possibilities but of statutory context.").8

We therefore turn to the statutory context of § 1252(f)(1). A closely adjacent provision, § 1252(e)(1)(A), precludes courts from entering "declaratory, injunctive, or other equitable relief in any action pertaining to an order to exclude an alien...." This provision is compelling evidence that Congress knew how to preclude declaratory relief, but chose not to in § 1252(f)(1). See INS v. Cardoza-Fonseca, 480 U.S. 421, 432, 107 S.Ct. 1207, 94 L.Ed.2d 434 (1987) ("`[Where] Congress includes particular language in one section of a statute but omits it in another section of the same Act, it is generally presumed that Congress acts intentionally and purposely in the disparate inclusion or exclusion.'" (quoting Russello v. United States, 464 U.S. 16, 23, 104 S.Ct. 296, 78 L.Ed.2d 17 (1983))). In Nken v. Holder, the Supreme Court followed this presumption in interpreting § 1252(f)(2), immediately adjacent to the provision at issue here, and noted that the presumption was "particularly true ... where [the] subsections ... were enacted as part of a unified overhaul of judicial review procedures." See Nken v. Holder, ___ U.S. ____, 129 S.Ct. 1749, 1759, 173 L.Ed.2d 550 (2009).

Even if the contrast between "enjoin or restrain" in § 1252(f)(1) and "declaratory, injunctive, or other equitable relief" in § 1252(e)(1)(A) does not, by itself, demonstrate that "restrain" does not encompass declaratory relief, it at least underscores an ambiguity that encourages consideration of § 1252(f)(1)'s section heading. See Fla. Dep't of Revenue v. Piccadilly Cafeterias, Inc., 554 U.S. 33, 47, 128 S.Ct. 2326, 171 L.Ed.2d 203 (2008) ("[S]tatutory titles and section headings are `tools available for the resolution of a doubt about the meaning of a statute.'") (quoting Porter v. Nussle, 534 U.S. 516, 528, 122 S.Ct. 983, 152 L.Ed.2d 12 (2002) (internal quotation marks omitted)). The title of § 1252(f), "Limit on injunctive relief," counsels in favor of interpreting "restrain" as referring to a form of injunctive relief. This reading is reinforced by the broader heading of § 1252(e)(1), "Limitations on relief." As noted above, § 1252(e)(1) — unlike § 1252(f)(1) — expressly bars jurisdiction over both injunctive and declaratory relief. We therefore read "Limit on injunctive relief" to mean what it says, and we conclude that "restrain" refers to one or more forms of temporary injunctive relief, such as a temporary restraining order or preliminary injunction.

In sum, viewing the provision in context and then taking into consideration the heading of the provision, it is apparent that the jurisdictional limitations in § 1252(f)(1) do not encompass declaratory relief. This moderate construction of "restrain" is in keeping with the Supreme Court's instruction that statutes limiting equitable relief are to be construed narrowly. See Porter v. Warner Holding Co., 328 U.S. 395, 398, 66 S.Ct. 1086, 90 L.Ed. 1332 (1946) ("Unless a statute in so many words, or by a necessary and inescapable inference, restricts the court's jurisdiction in equity, the full scope of that jurisdiction is to be recognized and applied."); see also Samuels v. Mackell, 401 U.S. 66, 70, 91 S.Ct. 764, 27 L.Ed.2d 688 (1971) ("[A] suit for declaratory judgment [is] ... `essentially an equitable cause of action'...." (quoting Great Lakes Dredge & Dock Co. v. Huffman, 319 U.S. 293, 300, 63 S.Ct. 1070, 87 L.Ed. 1407 (1943))).9 Our conclusion is consistent with the Ninth Circuit's holding on the identical question, and with the First Circuit's conclusion in a slightly different context. See Rodriguez v. Hayes, 591 F.3d 1105, 1119 (9th Cir.2010); Arevalo v. Ashcroft, 344 F.3d 1, 7 (1st Cir.2003).10

C.

The government contends that "restrain" should be construed to include declaratory relief because, in this context, such relief is the functional equivalent of injunctive relief. Specifically, the government contends that our interpretation leads to "an absurd result" by creating a "cause-of-action loophole that stops just short of ordering injunctive relief but establishes on a class-wide basis the right to such injunctive relief." Appellees' Br. at 29; see also, e.g., Lamie v. U.S. Trustee, 540 U.S. 526, 534, 124 S.Ct. 1023, 157 L.Ed.2d 1024 (2004) ("It is well established that when the statute's language is plain, the sole function of the courts — at least where the disposition required by the text is not absurd — is to enforce it according to its terms." (internal quotation marks omitted)).

Under certain circumstances, declaratory relief has been deemed "functionally equivalent" to injunctive relief. For example, in California v. Grace Brethren Church, 457 U.S. 393, 102 S.Ct. 2498, 73 L.Ed.2d 93 (1982), the Supreme Court assessed whether declaratory relief was permissible under the Tax Injunction Act, which provides that district courts "shall not enjoin, suspend or restrain the ... collection of any tax under State law...." 28 U.S.C. § 1341 (emphasis added). In ruling that the Act precludes both injunctive and declaratory relief, the Court observed that "the declaratory judgment `procedure may in every practical sense operate to suspend collection of the state taxes until the litigation is ended,'" Grace Brethren Church, 457 U.S. at 408, 102 S.Ct. 2498 (quoting Great Lakes Dredge & Dock Co. v. Huffman, 319 U.S. 293, 299, 63 S.Ct. 1070, 87 L.Ed. 1407 (1943)), and that a prohibition on declaratory relief was consistent with the "principal purpose" of the Act: "`to limit drastically federal district court jurisdiction to interfere with so important a local concern as the collection of taxes.'" Id. at 408, 102 S.Ct. 2498 (quoting Rosewell v. LaSalle Nat'l Bank, 450 U.S. 503, 522, 101 S.Ct. 1221, 67 L.Ed.2d 464 (1981)).11

But declaratory relief will not always be the functional equivalent of injunctive relief. In Steffel v. Thompson, the Supreme Court noted that "`[t]he express purpose of the Federal Declaratory Judgment Act was to provide a milder alternative to the injunction remedy.'" 415 U.S. 452, 467, 94 S.Ct. 1209, 39 L.Ed.2d 505 (1974) (quoting Perez v. Ledesma, 401 U.S. 82, 111, 91 S.Ct. 674, 27 L.Ed.2d 701 (1971) (Brennan, J., concurring in part and dissenting in part)). The Steffel Court noted that "[t]he only occasions where this Court has ... found that a preclusion of injunctive relief inevitably led to a denial of declaratory relief have been cases in which principles of federalism militated altogether against federal intervention in a class of adjudications." Id. at 472, 94 S.Ct. 1209; see also id. at 462, 94 S.Ct. 1209 ("When no state proceeding is pending and thus considerations of equity, comity, and federalism have little vitality, the propriety of granting federal declaratory relief may properly be considered independently of a request for injunctive relief.").12

The reasoning of Steffel significantly undermines the government's wholesale attempt to equate declaratory and injunctive relief, and it supports the conclusion that our reading of § 1252(f)(1) would not produce "an absurd result." The distinct purpose and effect of a declaration, as compared to an injunction, presents an entirely plausible basis upon which Congress might choose to bar one form of relief but not the other. Moreover, in this context a classwide declaration would not — indeed, by the plain terms of the statute, could not — form the basis for classwide injunctive relief. Though appellants do not dispute that class members could pursue individual injunctions after issuance of a classwide declaration, see Steffel, 415 U.S. at 461 n. 11, 94 S.Ct. 1209 ("[U]nder 28 U.S.C. § 2202 a declaratory judgment might serve as the basis for issuance of a later injunction...."), such individual relief is expressly permitted under § 1252(f)(1).13

Finally, as one respected scholar has noted, allowing classwide declaratory relief would "facilitate the Supreme Court review that Congress apparently intended." See Gerald L. Neuman, Federal Courts Issues in Immigration Law, 78 TEX. L. REV. 1661, 1686-87 (2000); see also 8 U.S.C. § 1252(f)(1) ("... no court (other than the Supreme Court) shall have jurisdiction or authority to enjoin or restrain...." (emphasis added)). The Supreme Court could not exercise original jurisdiction over such a class action, and "[a]n appellate jurisdiction necessarily implies some judicial determination, some judgment, decree, or order of an inferior tribunal, from which an appeal could be taken." The Alicia, 74 U.S. (7 Wall.) 571, 19 L.Ed. 84 (1869). "If instead section 1252(f)(1) were interpreted as permitting classwide declaratory — but not injunctive — relief in the lower courts, there would be a justiciable class action that could be subjected to appellate review." Neuman, 78 TEX. L. REV. at 1686. Thus Professor Neuman has articulated an additional reason that our interpretation of "restrain" would not lead to an unreasonable result.

In summary, we conclude that construing § 1252(f)(1) to permit class declaratory relief would not produce an "absurd result." We accordingly decline the government's invitation to disregard the most natural reading of the statute.

* * * * * *

The problem in this case is to determine the scope of what Congress intended in using the word "restrain" in § 1252(f)(1). The government places particular emphasis on that term's dictionary definitions. We think that, in construing a statute, dictionary definitions may be helpful starting points, but over-reliance on dictionaries — to the exclusion of sources such as adjacent statutory provisions — can lead a court astray. As we have noted previously, see supra note 8, the Supreme Court has given prudent counsel: "Interpretation of a word or phrase depends upon reading the whole statutory text, considering the purpose and context of the statute, and consulting any precedents or authorities that inform the analysis." Dolan, 546 U.S. at 486, 126 S.Ct. 1252. Accordingly, we (1) reverse the District Court's dismissal of those portions of appellants' amended habeas petition and civil complaint that sought class relief, (2) vacate the district court's denial of class certification, and (3) remand for further proceedings consistent with this opinion.

FUENTES, Circuit Judge, Dissenting.

The Majority concludes that, although 8 U.S.C. § 1252(f)(1) prohibits class action relief to "enjoin or restrain" immigration laws that regulate the detention of aliens convicted of crimes pending their removal, these jurisdictional limitations "do not encompass declaratory relief." Maj. Op. at 1013. I disagree because a class action for declaratory relief has the effect of restraining the operation of laws, like 8 U.S.C. § 1226(c), that regulate pre-removal detention in immigration proceedings — precisely what the plain text of § 1252(f)(1) prohibits.

The statute at issue in this case provides as follows:

8 U.S.C. § 1252(f)(1) (emphases added). Although this provision bars class action suits to "enjoin or restrain" the immigration laws that regulate the detention of aliens subject to removal, Alli argues that, by its plain language, § 1252(f)(1) contains no prohibition on declaratory relief. He points out that the text does not use the term "declaratory" and that the section is entitled "Limit on Injunctive Relief." I find these arguments unpersuasive. The real issue in this case is whether the word "restrain" bars a class claim for declaratory relief that would have the same practical effect as a class claim for injunctive relief. The Majority concludes that it does not because the word "restrain" refers to "temporary injunctive relief." Maj. Op. at 1013-14. This is incompatible with the Majority's conclusion that the word "restrain" should have a meaning different from the word "enjoin." Maj. Op. at 1011. In my view, while the term "enjoin" refers to injunctive relief — including the temporary kind — the term "restrain" is a broad one that includes, among other things, declaratory relief. For this reason, I respectfully dissent.

The District Court rejected Alli's interpretation of § 1252(f)(1) and, for several reasons, I find its analysis persuasive. First, because we endeavor to interpret statutes according to their "ordinary meaning," Chapman v. United States, 500 U.S. 453, 462, 111 S.Ct. 1919, 114 L.Ed.2d 524 (1991), I find dictionary definitions helpful. See Massie v. United States Dep't of Housing and Urban Dev., 620 F.3d 340, 356 (3d Cir.2010) (noting that the dictionary is the "proper starting place for ascertaining the plain meaning of words"). In this case, those definitions comport with common-sense understanding. The word "restrain" means "restrict, limit, confine," and "to hold back from action; keep in check or under control; repress." The American Heritage Dictionary of the English Language 1487 (4th ed. 2009); Random House Webster's Unabridged Dictionary 1642 (2d ed. 1998); The Compact Oxford English Dictionary 1573 (2d ed. 1989).

A class-wide declaratory judgment that aliens detained pursuant to § 1226(c) must receive an individualized hearing, as the Majority would allow, necessarily "restricts or limits" the Executive Branch's implementation of that statute. I find nothing ambiguous about this result.1 As the government argues, the term "restrain" is simply broad: Congress was so concerned about judicial second-guessing of its policy that it used a broad term in order to prevent it. See Diamond v. Chakrabarty, 447 U.S. 303, 315, 100 S.Ct. 2204, 65 L.Ed.2d 144 (1980) ("Broad general language is not necessarily ambiguous when congressional objectives require broad terms."); In re Philadelphia Newspapers, LLC, 599 F.3d 298, 310 (3d Cir. 2010) ("As a general matter of statutory construction, a term in a statute is not ambiguous merely because it is broad in scope.").

Alli's class action petition for declaratory relief operates to "restrain" the operation of the law and is therefore barred by § 1252(f)(1). In Younger v. Harris, the Supreme Court held that a plaintiff generally cannot file an action in federal court to enjoin a pending state prosecution. 401 U.S. 37, 91 S.Ct. 746, 27 L.Ed.2d 669 (1971). A companion case, Samuels v. Mackell, 401 U.S. 66, 91 S.Ct. 764, 27 L.Ed.2d 688 (1971), recognized that allowing declaratory judgments in such cases would largely undermine Younger's holding. The Supreme Court explained that "the propriety of declaratory and injunctive relief should be judged by essentially the same standards." Id. at 72, 91 S.Ct. 764. Applying this principle, the Supreme Court acknowledged that allowing declaratory judgments against pending state criminal prosecutions would (1) "serve as the basis for a subsequent injunction against those proceedings ... and thus result in a clearly improper interference with the state proceedings," and (2) "even if the declaratory judgment is not used as a basis for actually issuing an injunction, the declaratory relief alone [would have] virtually the same practical impact as a formal injunction...." Id. (emphasis added). In this way, it recognized that a declaratory judgment had the same practical limiting effect on a state prosecution as an injunction. Id. at 73, 91 S.Ct. 764. ("Ordinarily, however, the practical effect of the two forms of relief will be virtually identical....")

I am not persuaded by the Majority's reliance on Steffel v. Thompson, 415 U.S. 452, 94 S.Ct. 1209, 39 L.Ed.2d 505 (1974), to dismiss this authority. Steffel did not purport to overrule Samuels. It merely acknowledged that "different considerations enter into a federal court's decision as to declaratory relief, on the one hand, and injunctive relief, on the other." Steffel, 415 U.S. at 469, 94 S.Ct. 1209. This is certainly true: the decision to grant declaratory judgment is a purely discretionary one. See Wilton v. Seven Falls Co., 515 U.S. 277, 287-88, 115 S.Ct. 2137, 132 L.Ed.2d 214 (1995). The question is whether the considerations that led the Supreme Court to decide in Samuels that allowing declaratory judgments would undermine its holding in Younger are also applicable here. They are.

The concern in Samuels was that declaratory judgments would have the same practical effect of interfering with pending state proceedings as an injunction. Here, the concern is that a declaratory judgment has the same practical effect of interfering with pending immigration proceedings in immigration courts established by Congress and administered by the Executive branch. In both situations, a declaratory judgment will "serve as the basis for a subsequent injunction against those proceedings" and "even if the declaratory judgment is not used as a basis for actually issuing an injunction, the declaratory relief alone [would have] virtually the same practical impact as a formal injunction...." Samuels, 401 U.S. at 72, 91 S.Ct. 764 (emphasis added). This consideration was not present in Steffel, which reaches the sensible conclusion that a declaratory judgment action can be filed when there is no pending proceeding to interfere with. 415 U.S. at 462, 94 S.Ct. 1209.

Furthermore, the fact that district courts must consider a variety of factors in deciding between declaratory and injunctive relief is irrelevant to whether a declaratory judgment "restrains." The Majority implies that a declaratory judgment only restrains if it is the "functional equivalent" of an injunction. Maj. Op. at 1014. In this case, I believe that the two forms of relief are functionally equivalent. But even if they are not — even if a declaratory judgment is a "milder" form of relief — a milder form of relief can still "limit," "restrict" or "keep [someone] back from action." In this light, I am unconvinced that a declaratory judgment does not "restrain" the operation of § 1226(c).

Indeed, if a declaratory judgment does not "restrain" — that is "restrict, limit, confine" or "keep ... under control" the operation of a law — then what does it do? At its inception, the concept of declaratory relief was controversial because of the concern that such judgments were merely impermissible advisory opinions. See 10B Charles Alan Wright et al., Federal Practice and Procedure, § 2753 (3d ed. 1998). These concerns remain real, which is why courts are required to ensure that a declaratory judgment action presents an actual controversy and not just an abstract question of law. See Simmonds Aerocessories, Ltd. v. Elastic Stop Nut Corp. of Am., 257 F.2d 485, 489 (3d Cir.1958). The "fundamental test is whether the plaintiff seeks merely advice or whether a real question of conflicting legal interests is presented for judicial determination." Id. Here, it must be assumed that plaintiffs are seeking a determination of their legal rights as a class, not merely advice. Surely the determination of the legal rights of an entire class of aliens "restrains" the Executive Branch's legal authority over that class. See California v. Grace Brethren Church, 457 U.S. 393, 408 n. 21, 102 S.Ct. 2498, 73 L.Ed.2d 93 (1982) ("In enacting the Declaratory Judgment Act, Congress recognized the substantial effect declaratory relief would have on legal disputes.").

Second, the Supreme Court's interpretation of similar statutory phrases also supports my reading of § 1252(f)(1). The Tax Injunction Act states that district courts "shall not enjoin, suspend or restrain the... collection of any tax under State law...." 28 U.S.C. § 1341. Recognizing that there is "little practical difference between injunctive and declaratory relief," the Supreme Court held that this language stripped district courts of their jurisdiction to issue declaratory judgments as well as injunctions. Grace Brethren Church, 457 U.S. at 408, 102 S.Ct. 2498. Circuit courts interpreting the Johnson Act, which contains similar language limiting the ability of district courts to "enjoin, suspend or restrain the operation of" public utility rates set by state agencies, have reached the same conclusion: the phrase "enjoin, suspend or restrain" covers declaratory relief. See Brooks v. Sulphur Springs Valley Elec. Coop., 951 F.2d 1050, 1054 (9th Cir.1991); Tennyson v. Gas Serv. Co., 506 F.2d 1135, 1139 (10th Cir.1974).

Alli is correct to point out that these statutes implicated concerns of federalism. But I find this attempt to distinguish the cases more illuminating than discouraging: if concerns of federalism were enough to persuade the Supreme Court to conclude that declaratory judgments would "enjoin, suspend or restrain" state tax systems, analogous concerns of inter-branch relations would seem enough to conclude that class-wide declaratory judgments would "enjoin or restrain" the operation of a system created by Congress and implemented by the Executive Branch.

Third, § 1252(f)(1)'s reservation of jurisdiction in the Supreme Court does not support the Majority's interpretation. The Majority's argument runs as follows: if "restrain" bars class actions seeking either an injunction or a declaratory judgment, then the district court would never have jurisdiction to certify a class; if the district court cannot have jurisdiction over a class action, there can never be appellate jurisdiction over a class action; if there is no appellate jurisdiction over a class action, then the Supreme Court could never have jurisdiction; thus, § 1252(f)(1) must allow jurisdiction over classes seeking declaratory relief. The problem with this argument is that it proves too much. Since Professor Neuman acknowledges that Article III jurisdiction is remedy-specific, his argument also demonstrates that the Supreme Court will never have jurisdiction to "enjoin" the operation of § 1226(c). Gerald L. Neuman, Federal Courts in Immigration Law, 78 Tex. L. Rev. 1661, 1686 (2000). Moreover, Professor Neuman recognizes that the scope of the Supreme Court's authority to certify a class under its appellate jurisdiction is an open question. Id. The reservation of jurisdiction in the Supreme Court raises interesting issues of abstract law, but it has no bearing on the meaning of the word "restrain" and does nothing to support the Majority's interpretation.

Fourth, because the statute is not ambiguous, we do not need to look to other portions of the statute for guidance. Alli concedes that the title of a statute does not trump its plain text; the title is relevant only as a tool to resolve doubt about its meaning. See Appellant Br. at 16 n. 6; see also Pennsylvania Dep't of Corrections v. Yeskey, 524 U.S. 206, 212, 118 S.Ct. 1952, 141 L.Ed.2d 215 (1998) ("The title of a statute ... cannot limit the plain meaning of the text.") (internal quotation marks and citations omitted). Here, I have no doubts about its meaning. And even if I did, if "limit on injunctive relief" "mean[s] what it says," Maj. Op. at 1013, then it would be silly to allow class-wide injunctions as long as plaintiffs use two steps — a class action for declaratory relief followed by individual injunction actions — instead of one.2

In my view, the Majority's strongest argument regarding statutory context is that the closely adjacent provision of 8 U.S.C. § 1252(e)(1)(A) prohibits "declaratory, injunctive, or other equitable relief." However I do not see the relevance of the use of the term "declaratory" in § 1252(e)(1). The absence of that term in § 1252(f)(1) does not mean that Congress did not want to prevent actions for declaratory relief. Indeed, if I am right, Congress used the unambiguous word "restrain" because the word has a broad meaning that would encompass declaratory judgments. The words used in § 1252(f)(1) make it plain that the section is broader in scope than § 1252(e)(1)(A). The latter section, which applies to individual aliens, uses nouns to prohibit specific forms of relief. Section 1252(f)(1) seeks to limit a remedy that applies to entire classes and, to achieve that aim, uses broad verbs — "enjoin or restrain" — that encompass a range of court actions. See Philadelphia Newspapers, 599 F.3d at 310 ("In employing intentionally broad language, Congress avoids the necessity of spelling out in advance every contingency to which a statute could apply."). That Congress uses different words to accomplish different objectives in different sections of a statute does not render its commands ambiguous.

Finally, Alli argues that he is not seeking a declaratory judgment to restrain the operation of the statute, but only to prevent a violation of it. This is legal sleight of hand. Alli wants to obtain a declaration that the Executive Branch's execution of the law is unconstitutional. This is an attempt to "restrain" — to "keep in check or under control" the Executive Branch's execution of the law.

In short, the language of § 1252(f)(1) states that courts have no jurisdiction to enjoin or restrain the operation of immigration detention laws as they apply to entire classes of aliens. I believe that a declaratory judgment, no less than an injunction, is such a restraint. For that reason, I would affirm the District Court.