533 U.S. 289 (2001)

IMMIGRATION AND NATURALIZATION SERVICE
v.
ST. CYR

No. 00-767.

United States Supreme Court.

Argued April 24, 2001. Decided June 25, 2001. CERTIORARI TO THE UNITED STATES COURT OF APPEALS FOR THE SECOND CIRCUIT

*290 *291 Stevens, J., delivered the opinion of the Court, in which Kennedy, Souter, Ginsburg, and Breyer, JJ., joined. O'Connor, J., filed a dissenting opinion, post, p. 326. Scalia, J., filed a dissenting opinion, in *292 which Rehnquist, C. J., and Thomas, J., joined, and in which O'Connor, J., joined as to Parts I and III, post, p. 326.

Deputy Solicitor General Kneedler argued the cause for petitioner. With him on the briefs were Acting Solicitor General Underwood, Acting Assistant Attorney General Schiffer, Paul R. Q. Wolfson, Stephen C. Robinson, Donald E. Keener, Alison R. Drucker, Ernesto H. Molina, and James K. Filan, Jr.

Lucas Guttentag argued the cause for respondent. With him on the brief were Lee Gelernt, Judy Rabinovitz, Steven R. Shapiro, Jayashri Srikantiah, Michael G. Moore, and Paul A. Engelmayer.^[*]

Justice Stevens, delivered the opinion of the Court.

Both the Antiterrorism and Effective Death Penalty Act of 1996 (AEDPA), enacted on April 24, 1996, 110 Stat. 1214, and the Illegal Immigration Reform and Immigrant Responsibility Act of 1996 (IIRIRA), enacted on September 30, 1996, 110 Stat. 3009-546, contain comprehensive amendments to the Immigration and Nationality Act (INA), 66 Stat. 163, as amended, 8 U. S. C. § 1101 et seq. This case raises two important questions about the impact of those amendments. The first question is a procedural one, concerning the effect of those amendments on the availability of habeas corpus jurisdiction under 28 U. S. C. § 2241. The second question is a substantive one, concerning the impact of the amendments on conduct that occurred before *293 their enactment and on the availability of discretionary relief from deportation.

Respondent, Enrico St. Cyr, is a citizen of Haiti who was admitted to the United States as a lawful permanent resident in 1986. Ten years later, on March 8, 1996, he pleaded guilty in a state court to a charge of selling a controlled substance in violation of Connecticut law. That conviction made him deportable. Under pre-AEDPA law applicable at the time of his conviction, St. Cyr would have been eligible for a waiver of deportation at the discretion of the Attorney General. However, removal proceedings against him were not commenced until April 10, 1997, after both AEDPA and IIRIRA became effective, and, as the Attorney General interprets those statutes, he no longer has discretion to grant such a waiver.

In his habeas corpus petition, respondent has alleged that the restrictions on discretionary relief from deportation contained in the 1996 statutes do not apply to removal proceedings brought against an alien who pleaded guilty to a deportable crime before their enactment. The District Court accepted jurisdiction of his application and agreed with his submission. In accord with the decisions of four other Circuits, the Court of Appeals for the Second Circuit affirmed.^[1] 229 F. 3d 406 (2000). The importance of both questions warranted our grant of certiorari. 531 U. S. 1107 (2001).

I

The character of the pre-AEDPA and pre-IIRIRA law that gave the Attorney General discretion to waive deportation in certain cases is relevant to our appraisal of both the substantive and the procedural questions raised by *294 the petition of the Immigration and Naturalization Service (INS). We shall therefore preface our discussion of those questions with an overview of the sources, history, and scope of that law.

Subject to certain exceptions, § 3 of the Immigration Act of 1917 excluded from admission to the United States several classes of aliens, including, for example, those who had committed crimes "involving moral turpitude." 39 Stat. 875. The seventh exception provided "[t]hat aliens returning after a temporary absence to an unrelinquished United States domicile of seven consecutive years may be admitted in the discretion of the Secretary of Labor, and under such conditions as he may prescribe." Id., at 878.^[2] Although that provision applied literally only to exclusion proceedings, and although the deportation provisions of the statute did not contain a similar provision, the INS relied on § 3 to grant relief in deportation proceedings involving aliens who had departed and returned to this country after the ground for deportation arose. See, e. g., Matter of L, 1 I. & N. Dec. 1, 2 (1940).^[3]

Section 212 of the Immigration and Nationality Act of 1952, which replaced and roughly paralleled § 3 of the 1917 Act, excluded from the United States several classes of aliens, including those convicted of offenses involving moral turpitude or the illicit traffic in narcotics. See 66 Stat. 182-187. As with the prior law, this section was subject to a proviso granting the Attorney General broad discretion to *295 admit excludable aliens. See id., at 187. That proviso, codified at 8 U. S. C. § 1182(c), stated:

"Aliens lawfully admitted for permanent residence who temporarily proceeded abroad voluntarily and not under an order of deportation, and who are returning to a lawful unrelinquished domicile of seven consecutive years, may be admitted in the discretion of the Attorney General . . . ."

Like § 3 of the 1917 Act, § 212(c) was literally applicable only to exclusion proceedings, but it too has been interpreted by the Board of Immigration Appeals (BIA) to authorize any permanent resident alien with "a lawful unrelinquished domicile of seven consecutive years" to apply for a discretionary waiver from deportation. See Matter of Silva, 16 I. & N. Dec. 26, 30 (1976) (adopting position of Francis v. INS, 532 F. 2d 268 (CA2 1976)). If relief is granted, the deportation proceeding is terminated and the alien remains a permanent resident.

The extension of § 212(c) relief to the deportation context has had great practical importance, because deportable offenses have historically been defined broadly. For example, under the INA, aliens are deportable upon conviction for two crimes of "moral turpitude" (or for one such crime if it occurred within five years of entry into the country and resulted in a jail term of at least one year). See 8 U. S. C. §§ 1227(a)(2)(A)(i)—(ii) (1994 ed., Supp. V). In 1988, Congress further specified that an alien is deportable upon conviction for any "aggravated felony," Anti-Drug Abuse Act of 1988, 102 Stat. 4469-4470, § 1227(a)(2)(A)(iii), which was defined to include numerous offenses without regard to how long ago they were committed.^[4] Thus, the class of aliens *296 whose continued residence in this country has depended on their eligibility for § 212(c) relief is extremely large, and not surprisingly, a substantial percentage of their applications for § 212(c) relief have been granted.^[5] Consequently, in the period between 1989 and 1995 alone, § 212(c) relief was granted to over 10,000 aliens.^[6]

*297 Three statutes enacted in recent years have reduced the size of the class of aliens eligible for such discretionary relief. In 1990, Congress amended § 212(c) to preclude from discretionary relief anyone convicted of an aggravated felony who had served a term of imprisonment of at least five years. § 511, 104 Stat. 5052 (amending 8 U. S. C. § 1182(c)). In 1996, in § 440(d) of AEDPA, Congress identified a broad set of offenses for which convictions would preclude such relief. See 110 Stat. 1277 (amending 8 U. S. C. § 1182(c)).^[7] And finally, that same year, Congress passed IIRIRA. That statute, inter alia, repealed § 212(c), see § 304(b), 110 Stat. 3009-597, and replaced it with a new section that gives the Attorney General the authority to cancel removal for a narrow class of inadmissible or deportable aliens, see id., at 3009-594 (creating 8 U. S. C. § 1229b (1994 ed., Supp. V)). So narrowed, that class does not include anyone previously "convicted of any aggravated felony." § 1229b(a)(3) (1994 ed., Supp. V).

In the Attorney General's opinion, these amendments have entirely withdrawn his § 212(c) authority to waive deportation for aliens previously convicted of aggravated felonies. Moreover, as a result of other amendments adopted in AEDPA and IIRIRA, the Attorney General also maintains that there is no judicial forum available to decide whether these statutes did, in fact, deprive him of the power to grant such relief. As we shall explain below, we disagree on both points. In our view, a federal court does have jurisdiction to decide the merits of the legal question, and *298 the District Court and the Court of Appeals decided that question correctly in this case.

II

The first question we must consider is whether the District Court retains jurisdiction under the general habeas corpus statute, 28 U. S. C. § 2241, to entertain St. Cyr's challenge. His application for a writ raises a pure question of law. He does not dispute any of the facts that establish his deportability or the conclusion that he is deportable. Nor does he contend that he would have any right to have an unfavorable exercise of the Attorney General's discretion reviewed in a judicial forum. Rather, he contests the Attorney General's conclusion that, as a matter of statutory interpretation, he is not eligible for discretionary relief.

The District Court held, and the Court of Appeals agreed, that it had jurisdiction to answer that question in a habeas corpus proceeding.^[8] The INS argues, however, that four sections of the 1996 statutes—specifically, § 401(e) of AEDPA and three sections of IIRIRA (8 U. S. C. §§ 1252(a)(1), 1252(a)(2)(C), and 1252(b)(9) (1994 ed., Supp. V))—stripped the courts of jurisdiction to decide the question of law presented by respondent's habeas corpus application.

For the INS to prevail it must overcome both the strong presumption in favor of judicial review of administrative action^[9] and the longstanding rule requiring a clear statement of congressional intent to repeal habeas jurisdiction. See Ex parte Yerger, 8 Wall. 85, 102 (1869) ("We are not at liberty to except from [habeas corpus jurisdiction] any cases not plainly excepted by law"); Felker v. Turpin, 518 U. S. 651, 660-661 (1996) (noting that "[n]o provision of Title I *299 mentions our authority to entertain original habeas petitions," and the statute "makes no mention of our authority to hear habeas petitions filed as original matters in this Court").^[10] Implications from statutory text or legislative history are not sufficient to repeal habeas jurisdiction; instead, Congress must articulate specific and unambiguous statutory directives to effect a repeal. Ex parte Yerger, 8 Wall., at 105 ("Repeals by implication are not favored. They are seldom admitted except on the ground of repugnancy; and never, we think, when the former act can stand together with the new act").^[11]

In this case, the plain statement rule draws additional reinforcement from other canons of statutory construction. First, as a general matter, when a particular interpretation of a statute invokes the outer limits of Congress' power, we expect a clear indication that Congress intended that result. See Edward J. DeBartolo Corp. v. Florida Gulf Coast Building & Constr. Trades Council, 485 U. S. 568, 575 (1988). Second, if an otherwise acceptable construction of a statute *300 would raise serious constitutional problems, and where an alternative interpretation of the statute is "fairly possible," see Crowell v. Benson, 285 U. S. 22, 62 (1932), we are obligated to construe the statute to avoid such problems. See Ashwander v. TVA, 297 U. S. 288, 341, 345-348 (1936) (Brandeis, J., concurring); United States ex rel. Attorney General v. Delaware & Hudson Co., 213 U. S. 366, 408 (1909).^[12]

A construction of the amendments at issue that would entirely preclude review of a pure question of law by any court would give rise to substantial constitutional questions. Article I, § 9, cl. 2, of the Constitution provides: "The Privilege of the Writ of Habeas Corpus shall not be suspended, unless when in Cases of Rebellion or Invasion the public Safety may require it." Because of that Clause, some "judicial intervention in deportation cases" is unquestionably "required by the Constitution." Heikkila v. Barber, 345 U. S. 229, 235 (1953).

Unlike the provisions of AEDPA that we construed in Felker v. Turpin, 518 U. S. 651 (1996), this case involves an alien subject to a federal removal order rather than a person confined pursuant to a state-court conviction. Accordingly, regardless of whether the protection of the Suspension *301 Clause encompasses all cases covered by the 1867 Amendment extending the protection of the writ to state prisoners, cf. id., at 663-664, or by subsequent legal developments, see LaGuerre v. Reno, 164 F. 3d 1035 (CA7 1998), at the absolute minimum, the Suspension Clause protects the writ "as it existed in 1789."^[13]Felker, 518 U. S., at 663-664.

At its historical core, the writ of habeas corpus has served as a means of reviewing the legality of Executive detention, and it is in that context that its protections have been strongest.^[14] See, e. g., Swain v. Pressley, 430 U. S. 372, 380, n. 13 (1977); id., at 385-386 (Burger, C. J., concurring) (noting that "the traditional Great Writ was largely a remedy against executive detention"); Brown v. Allen, 344 U. S. 443, 533 (1953) (Jackson, J., concurring in result) ("The historic purpose of the writ has been to relieve detention by executive authorities without judicial trial"). In England prior to 1789, in the Colonies,^[15] and in this Nation during the formative years of our Government, the writ of habeas corpus was available to nonenemy aliens as well as to citizens.^[16]*302 It enabled them to challenge Executive and private detention in civil cases as well as criminal.^[17] Moreover, the issuance of the writ was not limited to challenges to the jurisdiction of the custodian, but encompassed detentions based on errors of law, including the erroneous application or interpretation of statutes.^[18] It was used to command the discharge of seamen who had a statutory exemption from impressment into the British Navy,^[19] to emancipate slaves,^[20] and to obtain the freedom of apprentices^[21] and asylum inmates.^[22] Most important, for our purposes, those early cases contain no suggestion that habeas relief in cases involving *303 Executive detention was only available for constitutional error.^[23]

Notwithstanding the historical use of habeas corpus to remedy unlawful Executive action, the INS argues that this case falls outside the traditional scope of the writ at common law. It acknowledges that the writ protected an individual who was held without legal authority, but argues that the writ would not issue where "an official had statutory authorization to detain the individual . . . but . . . the official was not properly exercising his discretionary power to determine whether the individual should be released." Brief for Respondent in Colcano-Martinez v. INS, O. T. 2000, No. 00-1011, p. 33. In this case, the INS points out, there is no dispute that the INS had authority in law to hold St. Cyr, as he is eligible for removal. St. Cyr counters that there is historical evidence of the writ issuing to redress the *304 improper exercise of official discretion. See n. 23, supra; Hafetz, The Untold Story of Noncriminal Habeas Corpus and the 1996 Immigration Acts, 107 Yale L. J. 2509 (1998).

St. Cyr's constitutional position also finds some support in our prior immigration cases. In Heikkila v. Barber, the Court observed that the then-existing statutory immigration scheme "had the effect of precluding judicial intervention in deportation cases except insofar as it was required by the Constitution, " 345 U. S., at 234-235 (emphasis added)—and that scheme, as discussed below, did allow for review on habeas of questions of law concerning an alien's eligibility for discretionary relief. Therefore, while the INS' historical arguments are not insubstantial, the ambiguities in the scope of the exercise of the writ at common law identified by St. Cyr, and the suggestions in this Court's prior decisions as to the extent to which habeas review could be limited consistent with the Constitution, convince us that the Suspension Clause questions that would be presented by the INS' reading of the immigration statutes before us are difficult and significant.^[24]

In sum, even assuming that the Suspension Clause protects only the writ as it existed in 1789, there is substantial *305 evidence to support the proposition that pure questions of law like the one raised by the respondent in this case could have been answered in 1789 by a common-law judge with power to issue the writ of habeas corpus. It necessarily follows that a serious Suspension Clause issue would be presented if we were to accept the INS' submission that the 1996 statutes have withdrawn that power from federal judges and provided no adequate substitute for its exercise. See Hart, The Power of Congress to Limit the Jurisdiction of Federal Courts: An Exercise in Dialectic, 66 Harv. L. Rev. 1362, 1395-1397 (1953). The necessity of resolving such a serious and difficult constitutional issue—and the desirability of avoiding that necessity—simply reinforce the reasons for requiring a clear and unambiguous statement of congressional intent.

Moreover, to conclude that the writ is no longer available in this context would represent a departure from historical practice in immigration law. The writ of habeas corpus has always been available to review the legality of Executive detention. See Felker, 518 U. S., at 663; Swain v. Pressley, 430 U. S., at 380, n. 13; id., at 385-386 (Burger, C. J., concurring); Brown v. Allen, 344 U. S., at 533 (Jackson, J., concurring in result). Federal courts have been authorized to issue writs of habeas corpus since the enactment of the Judiciary Act of 1789, and § 2241 of the Judicial Code provides that federal judges may grant the writ of habeas corpus on the application of a prisoner held "in custody in violation of the Constitution or laws or treaties of the United States."^[25] 28 U. S. C. § 2241. Before and after the enactment in 1875 of the first statute regulating immigration, 18 Stat. 477, that jurisdiction was regularly invoked on behalf of noncitizens, particularly in the immigration context. See, e. g., In re *306 Kaine, 14 How. 103 (1853); United States v. Jung Ah Lung, 124 U. S. 621, 626-632 (1888).

Until the enactment of the 1952 Immigration and Nationality Act, the sole means by which an alien could test the legality of his or her deportation order was by bringing a habeas corpus action in district court.^[26] See, e. g., United States v. Jung Ah Lung, 124 U. S. 621 (1888); Heikkila, 345 U. S., at 235; Chin Yow v. United States, 208 U. S. 8 (1908); Ng Fung Ho v. White, 259 U. S. 276, 284 (1922). In such cases, other than the question whether there was some evidence to support the order,^[27] the courts generally did not review factual determinations made by the Executive. See Ekiu v. United States, 142 U. S. 651, 659 (1892). However, they did review the Executive's legal determinations. See Gegiow v. Uhl, 239 U. S. 3, 9 (1915) ("The statute by enumerating the conditions upon which the allowance to land may be denied, prohibits the denial in other cases. And when the record shows that a commissioner of immigration is exceeding his power, the alien may demand his release upon habeas corpus "); see also Neuman, Jurisdiction and the Rule of Law after the 1996 Immigration Act, 113 Harv. L. Rev. 1963, 1965-1969 (2000).^[28] In case after case, courts answered questions of law in habeas *307 corpus proceedings brought by aliens challenging Executive interpretations of the immigration laws.^[29]

Habeas courts also regularly answered questions of law that arose in the context of discretionary relief. See, e. g., United States ex rel. Accardi v. Shaughnessy, 347 U. S. 260 (1954); United States ex rel. Hintopoulos v. Shaughnessy, 353 U. S. 72, 77 (1957).^[30] Traditionally, courts recognized a distinction between eligibility for discretionary relief, on the one hand, and the favorable exercise of discretion, on the other hand. See Neuman, 113 Harv. L. Rev., at 1991 (noting the "strong tradition in habeas corpus law . . . that subjects the legally erroneous failure to exercise discretion, unlike a substantively unwise exercise of discretion, to inquiry on the writ"). Eligibility that was "governed by specific *308 statutory standards" provided "a right to a ruling on an applicant's eligibility," even though the actual granting of relief was "not a matter of right under any circumstances, but rather is in all cases a matter of grace." Jay v. Boyd, 351 U. S. 345, 353-354 (1956). Thus, even though the actual suspension of deportation authorized by § 19(c) of the Immigration Act of 1917 was a matter of grace, in United States ex rel. Accardi v. Shaughnessy, 347 U. S. 260 (1954), we held that a deportable alien had a right to challenge the Executive's failure to exercise the discretion authorized by the law. The exercise of the District Court's habeas corpus jurisdiction to answer a pure question of law in this case is entirely consistent with the exercise of such jurisdiction in Accardi. See also United States ex rel. Hintopoulos v. Shaughnessy, 353 U. S., at 77.

Thus, under the pre-1996 statutory scheme—and consistent with its common-law antecedents—it is clear that St. Cyr could have brought his challenge to the BIA's legal determination in a habeas corpus petition under 28 U. S. C. § 2241. The INS argues, however, that AEDPA and IIRIRA contain four provisions that express a clear and unambiguous statement of Congress' intent to bar petitions brought under § 2241, despite the fact that none of them mention that section. The first of those provisions is AEDPA's § 401(e).

While the title of § 401(e)—"Elimination of Custody Review by Habeas Corpus"—would seem to support the INS' submission, the actual text of that provision does not.^[31] As we have previously noted, a title alone is not controlling. Pennsylvania Dept. of Corrections v. Yeskey, 524 U. S. 206, *309 212 (1998) ("`[T]he title of a statute . . . cannot limit the plain meaning of the text. For interpretive purposes, [it is] of use only when [it] shed[s] light on some ambiguous word or phrase' " (quoting Trainmen v. Baltimore & Ohio R. Co., 331 U. S. 519, 528-529 (1947))). The actual text of § 401(e), unlike its title, merely repeals a subsection of the 1961 statute amending the judicial review provisions of the 1952 Immigration and Nationality Act. See n. 31, supra. Neither the title nor the text makes any mention of 28 U. S. C. § 2241.

Under the 1952 Act, district courts had broad authority to grant declaratory and injunctive relief in immigration cases, including orders adjudicating deportability and those denying suspensions of deportability. See Foti v. INS, 375 U. S. 217, 225-226 (1963). The 1961 Act withdrew that jurisdiction from the district courts and provided that the procedures set forth in the Hobbs Act would be the "sole and exclusive procedure" for judicial review of final orders of deportation, subject to a series of exceptions. See 75 Stat. 651. The last of those exceptions stated that "any alien held in custody pursuant to an order of deportation may obtain review thereof by habeas corpus proceedings." See id., at 652, codified at 8 U. S. C. § 1105a(10) (repealed Sept. 30, 1996).

The INS argues that the inclusion of that exception in the 1961 Act indicates that Congress must have believed that it would otherwise have withdrawn the pre-existing habeas corpus jurisdiction in deportation cases, and that, as a result, the repeal of that exception in AEDPA in 1996 implicitly achieved that result. It seems to us, however, that the 1961 exception is best explained as merely confirming the limited scope of the new review procedures. In fact, the 1961 House Report provides that this section "in no way disturbs the Habeas Corpus Act."^[32] H. R. Rep. No. 1086, 87th Cong., 1st *310 Sess., 29 (1961). Moreover, a number of the courts that considered the interplay between the general habeas provision and INA § 106(a)(10) after the 1961 Act and before the enactment of AEDPA did not read the 1961 Act's specific habeas provision as supplanting jurisdiction under § 2241. Orozco v. INS, 911 F. 2d 539, 541 (CA11 1990); United States ex rel. Marcello v. INS, 634 F. 2d 964, 967 (CA5 1981); Sotelo Mondragon v. Ilchert, 653 F. 2d 1254, 1255 (CA9 1980).

In any case, whether § 106(a)(10) served as an independent grant of habeas jurisdiction or simply as an acknowledgment of continued jurisdiction pursuant to § 2241, its repeal cannot be sufficient to eliminate what it did not originally grant— namely, habeas jurisdiction pursuant to 28 U. S. C. § 2241.^[33] See Ex parte Yerger, 8 Wall., at 105-106 (concluding that the repeal of "an additional grant of jurisdiction" does not "operate as a repeal of jurisdiction theretofore allowed"); Ex parte McCardle, 7 Wall. 506, 515 (1869) (concluding that the repeal of portions of the 1867 statute conferring appellate jurisdiction on the Supreme Court in habeas proceedings did "not affect the jurisdiction which was previously exercised").

The INS also relies on three provisions of IIRIRA, now codified at 8 U. S. C. §§ 1252(a)(1), 1252(a)(2)(C), and *311 1252(b)(9) (1994 ed., Supp. V). As amended by § 306 of IIRIRA, 8 U. S. C. § 1252(a)(1) (1994 ed., Supp. V) now provides that, with certain exceptions, including those set out in subsection (b) of the same statutory provision, "[j]udicial review of a final order of removal . . . is governed only by" the Hobbs Act's procedures for review of agency orders in the courts of appeals. Similarly, § 1252(b)(9), which addresses the "[c]onsolidation of questions for judicial review," provides that "[j]udicial review of all questions of law and fact, including interpretation and application of constitutional and statutory provisions, arising from any action taken or proceeding brought to remove an alien from the United States under this subchapter shall be available only in judicial review of a final order under this section."^[34] Finally, § 1252(a)(2)(C), which concerns "[m]atters not subject to judicial review," states: "Notwithstanding any other provision of law, no court shall have jurisdiction to review any final order of removal against an alien who is removable by reason of having committed" certain enumerated criminal offenses.

The term "judicial review" or "jurisdiction to review" is the focus of each of these three provisions. In the immigration context, "judicial review" and "habeas corpus" have historically distinct meanings. See Heikkila v. Barber, 345 U. S. 229 (1953). In Heikkila, the Court concluded that the finality provisions at issue "preclud[ed] judicial review" to the maximum extent possible under the Constitution, and thus concluded that the APA was inapplicable. Id., at 235. Nevertheless, the Court reaffirmed the right to habeas *312 corpus. Ibid. Noting that the limited role played by the courts in habeas corpus proceedings was far narrower than the judicial review authorized by the APA, the Court concluded that "it is the scope of inquiry on habeas corpus that differentiates" habeas review from "judicial review." Id., at 236; see also, e. g., Terlinden v. Ames, 184 U. S. 270, 278 (1902) (noting that under the extradition statute then in effect there was "no right of review to be exercised by any court or judicial officer," but that limited review on habeas was nevertheless available); Ekiu, 142 U. S., at 663 (observing that while a decision to exclude an alien was subject to inquiry on habeas, it could not be "impeached or reviewed"). Both §§ 1252(a)(1) and (a)(2)(C) speak of "judicial review"— that is, full, nonhabeas review. Neither explicitly mentions habeas,^[35] or 28 U. S. C. § 2241.^[36] Accordingly, neither provision *313 speaks with sufficient clarity to bar jurisdiction pursuant to the general habeas statute.

The INS also makes a separate argument based on 8 U. S. C. § 1252(b)(9) (1994 ed., Supp. V). We have previously described § 1252(b)(9) as a "zipper clause." AADC, 525 U. S. 471, 483 (1999). Its purpose is to consolidate "judicial review" of immigration proceedings into one action in the court of appeals, but it applies only "[w]ith respect to review of an order of removal under subsection (a)(1)." 8 U. S. C. § 1252(b) (1994 ed., Supp. V).^[37] Accordingly, this provision, by its own terms, does not bar habeas jurisdiction over removal orders not subject to judicial review under § 1252(a)(1)—including orders against aliens who are removable by reason of having committed one or more criminal offenses. Subsection (b)(9) simply provides for the consolidation of issues to be brought in petitions for "[j]udicial review," which, as we note above, is a term historically distinct *314 from habeas. See Mahadeo v. Reno, 226 F. 3d 3, 12 (CA1 2000); Flores-Miramontes v. INS, 212 F. 3d 1133, 1140 (CA9 2000). It follows that § 1252(b)(9) does not clearly apply to actions brought pursuant to the general habeas statute, and thus cannot repeal that statute either in part or in whole.

If it were clear that the question of law could be answered in another judicial forum, it might be permissible to accept the INS' reading of § 1252. But the absence of such a forum, coupled with the lack of a clear, unambiguous, and express statement of congressional intent to preclude judicial consideration on habeas of such an important question of law, strongly counsels against adopting a construction that would raise serious constitutional questions.^[38] Cf. Felker, 518 U. S., at 660-661. Accordingly, we conclude that habeas jurisdiction under § 2241 was not repealed by AEDPA and IIRIRA.

III

The absence of a clearly expressed statement of congressional intent also pervades our review of the merits of St. Cyr's claim. Two important legal consequences ensued from respondent's entry of a guilty plea in March 1996: (1) He became subject to deportation, and (2) he became eligible for a discretionary waiver of that deportation under the prevailing *315 interpretation of § 212(c). When IIRIRA went into effect in April 1997, the first consequence was unchanged except for the fact that the term "removal" was substituted for "deportation." The issue that remains to be resolved is whether IIRIRA § 304(b) changed the second consequence by eliminating respondent's eligibility for a waiver.

The INS submits that the statute resolves the issue because it unambiguously communicates Congress' intent to apply the provisions of IIRIRA's Title III—A to all removals initiated after the effective date of the statute, and, in any event, its provisions only operate prospectively and not retrospectively. The Court of Appeals, relying primarily on the analysis in our opinion in Landgraf v. USI Film Products, 511 U. S. 244 (1994), held, contrary to the INS' arguments, that Congress' intentions concerning the application of the "Cancellation of Removal" procedure are ambiguous and that the statute imposes an impermissible retroactive effect on aliens who, in reliance on the possibility of § 212(c) relief, pleaded guilty to aggravated felonies. See 229 F. 3d, at 416, 420. We agree.

Retroactive statutes raise special concerns. See Landgraf, 511 U. S., at 266. "The Legislature's unmatched powers allow it to sweep away settled expectations suddenly and without individualized consideration. Its responsivity to political pressures poses a risk that it may be tempted to use retroactive legislation as a means of retribution against unpopular groups or individuals."^[39]Ibid. Accordingly, "congressional enactments . . . will not be construed to have retroactive effect unless their language requires this *316 result." Bowen v. Georgetown Univ. Hospital, 488 U. S. 204, 208 (1988).

"[This] presumption against retroactive legislation is deeply rooted in our jurisprudence, and embodies a legal doctrine centuries older than our Republic. Elementary considerations of fairness dictate that individuals should have an opportunity to know what the law is and to conform their conduct accordingly; settled expectations should not be lightly disrupted. For that reason, the `principle that the legal effect of conduct should ordinarily be assessed under the law that existed when the conduct took place has timeless and universal human appeal.' Kaiser, 494 U. S., at 855 (Scalia, J., concurring). In a free, dynamic society, creativity in both commercial and artistic endeavors is fostered by a rule of law that gives people confidence about the legal consequences of their actions." Landgraf, 511 U. S., at 265-266 (footnote omitted).

Despite the dangers inherent in retroactive legislation, it is beyond dispute that, within constitutional limits, Congress has the power to enact laws with retrospective effect. See id., at 268. A statute may not be applied retroactively, however, absent a clear indication from Congress that it intended such a result. "Requiring clear intent assures that Congress itself has affirmatively considered the potential unfairness of retroactive application and determined that it is an acceptable price to pay for the countervailing benefits." Id., at 272-273. Accordingly, the first step in determining whether a statute has an impermissible retroactive effect is to ascertain whether Congress has directed with the requisite clarity that the law be applied retrospectively. Martin v. Hadix,