system: You are a legal assistant. Answer concisely and accurately. When legal text is provided, rely on it and do not invent facts.

user: Read the following U.S. Supreme Court case excerpt and classify it into the correct legal issue area. Excerpt: 542 U.S. 656 ASHCROFT, ATTORNEY GENERALv.AMERICAN CIVIL LIBERTIES UNION ET AL. No. 03-218. Supreme Court of United States. Argued March 2, 2004. Decided June 29, 2004. To protect minors from exposure to sexually explicit materials on the Internet, Congress enacted the Child Online Protection Act (COPA), 47 U. S. C. § 231, which, among other things, imposes a $50,000 fine and six months in prison for the knowing posting, for "commercial purposes," § 231(a)(1), of World Wide Web content that is "harmful to minors," but provides an affirmative defense to commercial Web speakers who restrict access to prohibited materials by "requiring use of a credit card" or "any other reasonable measures that are feasible under available technology," § 231(c)(1). COPA was enacted in response to Reno v. American Civil Liberties Union, 521 U. S. 844, in which this Court held that the Communications Decency Act of 1996, Congress' first attempt to make the Internet safe for minors by criminalizing certain Internet speech, was unconstitutional because it was not narrowly tailored to serve a compelling governmental interest and because less restrictive alternatives were available. Respondents, Web speakers and others concerned with protecting the freedom of speech, filed suit for a preliminary injunction against COPA's enforcement. After considering testimony presented by both respondents and the Government, the District Court granted the preliminary injunction, concluding that respondents were likely to prevail on their argument that there were less restrictive alternatives to COPA, particularly blocking or filtering technology. The Third Circuit affirmed on different grounds, but this Court reversed, Ashcroft v. American Civil Liberties Union, 535 U. S. 564. On remand, the Third Circuit again affirmed, concluding, inter alia, that COPA was not the least restrictive means available for the Government to serve the interest of preventing minors from using the Internet to gain access to harmful materials. Held: The Third Circuit was correct to affirm the District Court's ruling that enforcement of COPA should be enjoined because the statute likely violates the First Amendment. Pp. 664-673. (a) The District Court did not abuse its discretion when it entered the preliminary injunction. The abuse-of-discretion standard applies on review of such an injunction. Because 28 U. S. C. § 1254(1)'s grant of appellate jurisdiction does not give this Court license to depart from an established review standard, Walters v. National Assn. of Radiation Survivors, 473 U. S. 305, 336, the injunction must be upheld and the case remanded for trial on the merits if the underlying constitutional question is close. There is therefore no need to consider the broader constructions of the statute adopted by the Court of Appeals. The District Court concentrated primarily on the argument that there are plausible, less restrictive alternatives to COPA. See Reno, 521 U. S., at 874. When plaintiffs challenge a content-based speech restriction, the Government has the burden to prove that the proposed alternatives will not be as effective as the challenged statute. Ibid. The purpose of the test is to ensure that speech is restricted no further than is necessary to accomplish Congress' goal. The District Court's conclusion that respondents were likely to prevail was not an abuse of discretion, because, on the record, the Government has not met its burden. Most importantly, respondents propose that blocking and filtering software is a less restrictive alternative, and the Government had not shown it would be likely to disprove that contention at trial. Filters impose selective restrictions on speech at the receiving end, not universal restrictions at the source. Under a filtering regime, childless adults may gain access to speech they have a right to see without having to identify themselves or provide their credit card information. Even adults with children may obtain access to the same speech on the same terms simply by turning off the filter on their home computers. Promoting filter use does not condemn as criminal any category of speech, and so the potential chilling effect is eliminated, or at least much diminished. Filters, moreover, may well be more effective than COPA. First, the record demonstrates that a filter can prevent minors from seeing all pornography, not just pornography posted to the Web from America. That COPA does not prevent minors from accessing foreign harmful materials alone makes it possible that filtering software might be more effective in serving Congress' goals. COPA's effectiveness is likely to diminish even further if it is upheld, because providers of the materials covered by the statute simply can move their operations overseas. In addition, the District Court found that verification systems may be subject to evasion and circumvention, e. g., by minors who have their own credit cards. Finally, filters also may be more effective because they can be applied to all forms of Internet communication, including e-mail, not just the World Wide Web. Filtering's superiority to COPA is confirmed by the explicit findings of the Commission on Child Online Protection, which Congress created to evaluate the relative merits of different means of restricting minors' ability to gain access to harmful materials on the Internet. 47 U. S. C. § 231, note. Although filtering software is not a perfect solution because it may block some materials not harmful to minors and fail to catch some that are, the Government has not satisfied its burden to introduce specific evidence proving that filters are less effective. The argument that filtering software is not an available alternative because Congress may not require its use carries little weight, since Congress may act to encourage such use by giving strong incentives to schools and libraries, United States v. American Library Assn., Inc., 539 U. S. 194, and by promoting the development of filters by industry and their use by parents. The closest precedent is United States v. Playboy Entertainment Group, Inc., 529 U. S. 803, which, like this case, involved a content-based restriction designed to protect minors from viewing harmful materials. The Court there concluded that, absent a showing that a less restrictive technological alternative already available to parents would not be as effective as a blanket speech restriction, the more restrictive option preferred by Congress could not survive strict scrutiny. Id., at 826. The reasoning of Playboy Entertainment Group, and the holdings and force of this Court's precedents, compel the Court to affirm the preliminary injunction here. To do otherwise would be to do less than the First Amendment commands. Id., at 830. Pp. 664-670. (b) Important practical reasons also support letting the injunction stand pending a full trial on the merits. First, the potential harms from reversal outweigh those of leaving the injunction in place by mistake. Extraordinary harm and a serious chill upon protected speech may result where, as here, a prosecution is a likely possibility but only an affirmative defense is available, so that speakers may self-censor rather than risk the perils of trial. Cf. Playboy Entertainment Group, supra, at 817. The harm done from letting the injunction stand pending a trial on the merits, in contrast, will not be extensive. Second, there are substantial factual disputes remaining in the case, including a serious gap in the evidence as to the filtering software's effectiveness. By allowing the preliminary injunction to stand and remanding for trial, the Court requires the Government to shoulder its full constitutional burden of proof respecting the less restrictive alternative argument, rather than excuse it from doing so. Third, the factual record does not reflect current technological reality—a serious flaw in any case involving the Internet, which evolves at a rapid pace. It is reasonable to assume that technological developments important to the First Amendment analysis have occurred in the five years since the District Court made its factfindings. By affirming the preliminary injunction and remanding for trial, the Court allows the parties to update and supplement the factual record to reflect current technology. Remand will also permit the District Court to take account of a changed legal landscape: Since that court made its factfindings, Congress has passed at least two further statutes that might qualify as less restrictive alternatives to COPA—a prohibition on misleading domain names, and a statute creating a minors-safe "dot-Kids" domain. Pp. 670-673. 322 F. 3d 240, affirmed and remanded. KENNEDY, J., delivered the opinion of the Court, in which STEVENS, SOUTER, THOMAS, and GINSBURG, JJ., joined. STEVENS, J., filed a concurring opinion, in which GINSBURG, J., joined, post, p. 673. SCALIA, J., filed a dissenting opinion, post, p. 676. BREYER, J., filed a dissenting opinion, in which REHNQUIST, C. J., and O'CONNOR, J., joined, post, p. 676. CERTIORARI TO THE UNITED STATES COURT OF APPEALS FOR THE THIRD CIRCUIT. Solicitor General Olson argued the cause for petitioner. With him on the briefs were Assistant Attorney General Keisler, Deputy Solicitor General Kneedler, Irving L. Gornstein, Barbara L. Herwig, Charles W. Scarborough, and August E. Flentje. Ann E. Beeson argued the cause for respondents. With her on the brief were Christopher A. Hansen, Steven R. Shapiro, Stefan Presser, Christopher R. Harris, and David L. Sobel.* JUSTICE KENNEDY delivered the opinion of the Court. 1 This case presents a challenge to a statute enacted by Congress to protect minors from exposure to sexually explicit materials on the Internet, the Child Online Protection Act (COPA), 112 Stat. 2681-736, codified at 47 U. S. C. § 231. We must decide whether the Court of Appeals was correct to affirm a ruling by the District Court that enforcement of COPA should be enjoined because the statute likely violates the First Amendment. 2 In enacting COPA, Congress gave consideration to our earlier decisions on this subject, in particular the decision in Reno v. American Civil Liberties Union, 521 U. S. 844 (1997). For that reason, "the Judiciary must proceed with caution and ... with care before invalidating the Act." Ashcroft v. American Civil Liberties Union, 535 U. S. 564, 592 (2002) (Ashcroft I) (KENNEDY, J., concurring in judgment). The imperative of according respect to the Congress, however, does not permit us to depart from well-established First Amendment principles. Instead, we must hold the Government to its constitutional burden of proof. 3 Content-based prohibitions, enforced by severe criminal penalties, have the constant potential to be a repressive force in the lives and thoughts of a free people. To guard against that threat the Constitution demands that content-based restrictions on speech be presumed invalid, R. A. V. v. St. Paul, 505 U. S. 377, 382 (1992), and that the Government bear the burden of showing their constitutionality, United States v. Playboy Entertainment Group, Inc., 529 U. S. 803, 817 (2000). This is true even when Congress twice has attempted to find a constitutional means to restrict, and punish, the speech in question. 4 This case comes to the Court on certiorari review of an appeal from the decision of the District Court granting a preliminary injunction. The Court of Appeals reviewed the decision of the District Court for abuse of discretion. Under that standard, the Court of Appeals was correct to conclude that the District Court did not abuse its discretion in granting the preliminary injunction. The Government has failed, at this point, to rebut the plaintiffs' contention that there are plausible less restrictive alternatives to the statute. Substantial practical considerations, furthermore, argue in favor of upholding the injunction and allowing the case to proceed to trial. For those reasons, we affirm the decision of the Court of Appeals upholding the preliminary injunction, and we remand the case so that it may be returned to the District Court for trial on the issues presented. 5 * A 6 COPA is the second attempt by Congress to make the Internet safe for minors by criminalizing certain Internet speech. The first attempt was the Communications Decency Act of 1996, Pub. L. 104-104, § 502, 110 Stat. 133, 47 U. S. C. § 223 (1994 ed., Supp. II). The Court held the CDA unconstitutional because it was not narrowly tailored to serve a compelling governmental interest and because less restrictive alternatives were available. Reno, supra. 7 In response to the Court's decision in Reno, Congress passed COPA. COPA imposes criminal penalties of a $50,000 fine and six months in prison for the knowing posting, for "commercial purposes," of World Wide Web content that is "harmful to minors." § 231(a)(1). Material that is "harmful to minors" is defined as: 8 "any communication, picture, image, graphic image file, article, recording, writing, or other matter of any kind that is obscene or that— 9 "(A) the average person, applying contemporary community standards, would find, taking the material as a whole and with respect to minors, is designed to appeal to, or is designed to pander to, the prurient interest; 10 "(B) depicts, describes, or represents, in a manner patently offensive with respect to minors, an actual or simulated sexual act or sexual contact, an actual or simulated normal or perverted sexual act, or a lewd exhibition of the genitals or post-pubescent female breast; and 11 "(C) taken as a whole, lacks serious literary, artistic, political, or scientific value for minors." § 231(e)(6). 12 "Minor[s]" are defined as "any person under 17 years of age." § 231(e)(7). A person acts for "commercial purposes only if such person is engaged in the business of making such communications." "Engaged in the business," in turn, 13 "means that the person who makes a communication, or offers to make a communication, by means of the World Wide Web, that includes any material that is harmful to minors, devotes time, attention, or labor to such activities, as a regular course of such person's trade or business, with the objective of earning a profit as a result of such activities (although it is not necessary that the person make a profit or that the making or offering to make such communications be the person's sole or principal business or source of income)." § 231(e)(2). 14 While the statute labels all speech that falls within these definitions as criminal speech, it also provides an affirmative defense to those who employ specified means to prevent minors from gaining access to the prohibited materials on their Web site. A person may escape conviction under the statute by demonstrating that he 15 "has restricted access by minors to material that is harmful to minors— 16 "(A) by requiring use of a credit card, debit account, adult access code, or adult personal identification number; 17 "(B) by accepting a digital certificate that verifies age; or 18 "(C) by any other reasonable measures that are feasible under available technology." § 231(c)(1). 19 Since the passage of COPA, Congress has enacted additional laws regulating the Internet in an attempt to protect minors. For example, it has enacted a prohibition on misleading Internet domain names, 18 U. S. C. A. § 2252B (Supp. 2004), in order to prevent Web site owners from disguising pornographic Web sites in a way likely to cause uninterested persons to visit them. See Brief for Petitioner 7 (giving, as an example, the Web site "whitehouse.com"). It has also passed a statute creating a "Dot Kids" second-level Internet domain, the content of which is restricted to that which is fit for minors under the age of 13. 47 U. S. C. A. § 941 (Supp. 2004). B 20 Respondents, Internet content providers and others concerned with protecting the freedom of speech, filed suit in the United States District Court for the Eastern District of Pennsylvania. They sought a preliminary injunction against enforcement of the statute. After considering testimony from witnesses presented by both respondents and the Government, the District Court issued an order granting the preliminary injunction. The court first noted that the statute would place a burden on some protected speech. American Civil Liberties Union v. Reno, 31 F. Supp. 2d 473, 495 (1999). The court then concluded that respondents were likely to prevail on their argument that there were less restrictive alternatives to the statute: "On the record to date, it is not apparent ... that [petitioner] can meet its burden to prove that COPA is the least restrictive means available to achieve the goal of restricting the access of minors" to harmful material. Id., at 497. In particular, it noted that "[t]he record before the Court reveals that blocking or filtering technology may be at least as successful as COPA would be in restricting minors' access to harmful material online without imposing the burden on constitutionally protected speech that COPA imposes on adult users or Web site operators." Ibid. The Government appealed the District Court's decision to the United States Court of Appeals for the Third Circuit. The Court of Appeals affirmed the preliminary injunction, but on a different ground. American Civil Liberties Union v. Reno, 217 F. 3d 162, 166 (2000). The court concluded that the "community standards" language in COPA by itself rendered the statute unconstitutionally overbroad. Ibid. We granted certiorari and reversed, holding that the community-standards language did not, standing alone, make the statute unconstitutionally overbroad. Ashcroft I, 535 U. S., at 585. We emphasized, however, that our decision was limited to that narrow issue. Ibid. We remanded the case to the Court of Appeals to reconsider whether the District Court had been correct to grant the preliminary injunction. On remand, the Court of Appeals again affirmed the District Court. 322 F. 3d 240 (2003). The Court of Appeals concluded that the statute was not narrowly tailored to serve a compelling Government interest, was overbroad, and was not the least restrictive means available for the Government to serve the interest of preventing minors from using the Internet to gain access to materials that are harmful to them. Id., at 266-271. The Government once again sought review from this Court, and we again granted certiorari. 540 U. S. 944 (2003). II 21 * "This Court, like other appellate courts, has always applied the abuse of discretion standard on review of a preliminary injunction." Walters v. National Assn. of Radiation Survivors, 473 U. S. 305, 336 (1985) (O'CONNOR, J., concurring) (internal quotation marks omitted). "The grant of appellate jurisdiction under [28 U. S. C.] § 1252 does not give the Court license to depart from established standards of appellate review." Ibid. If the underlying constitutional question is close, therefore, we should uphold the injunction and remand for trial on the merits. Applying this mode of inquiry, we agree with the Court of Appeals that the District Court did not abuse its discretion in entering the preliminary injunction. Our reasoning in support of this conclusion, however, is based on a narrower, more specific grounds than the rationale the Court of Appeals adopted. The Court of Appeals, in its opinion affirming the decision of the District Court, construed a number of terms in the statute, and held that COPA, so construed, was unconstitutional. None of those constructions of statutory terminology, however, were relied on by or necessary to the conclusions of the District Court. Instead, the District Court concluded only that the statute was likely to burden some speech that is protected for adults, 31 F. Supp. 2d, at 495, which petitioner does not dispute. As to the definitional disputes, the District Court concluded only that respondents' interpretation was "not unreasonable," and relied on their interpretation only to conclude that respondents had standing to challenge the statute, id., at 481, which, again, petitioner does not dispute. Because we affirm the District Court's decision to grant the preliminary injunction for the reasons relied on by the District Court, we decline to consider the correctness of the other arguments relied on by the Court of Appeals. 22 The District Court, in deciding to grant the preliminary injunction, concentrated primarily on the argument that there are plausible, less restrictive alternatives to COPA. A statute that "effectively suppresses a large amount of speech that adults have a constitutional right to receive and to address to one another ... is unacceptable if less restrictive alternatives would be at least as effective in achieving the legitimate purpose that the statute was enacted to serve." Reno, 521 U. S., at 874. When plaintiffs challenge a content-based speech restriction, the burden is on the Government to prove that the proposed alternatives will not be as effective as the challenged statute. Ibid. In considering this question, a court assumes that certain protected speech may be regulated, and then asks what is the least restrictive alternative that can be used to achieve that goal. The purpose of the test is not to consider whether the challenged restriction has some effect in achieving Congress' goal, regardless of the restriction it imposes. The purpose of the test is to ensure that speech is restricted no further than necessary to achieve the goal, for it is important to ensure that legitimate speech is not chilled or punished. For that reason, the test does not begin with the status quo of existing regulations, then ask whether the challenged restriction has some additional ability to achieve Congress' legitimate interest. Any restriction on speech could be justified under that analysis. Instead, the court should ask whether the challenged regulation is the least restrictive means among available, effective alternatives. 23 In deciding whether to grant a preliminary injunction, a district court must consider whether the plaintiffs have demonstrated that they are likely to prevail on the merits. See, e. g., Doran v. Salem Inn, Inc., 422 U. S. 922, 931 (1975). (The court also considers whether the plaintiff has shown irreparable injury, see ibid., but the parties in this case do not contest the correctness of the District Court's conclusion that a likelihood of irreparable injury had been established. See 31 F. Supp. 2d, at 497-498.) As the Government bears the burden of proof on the ultimate question of COPA's constitutionality, respondents must be deemed likely to prevail unless the Government has shown that respondents' proposed less restrictive alternatives are less effective than COPA. Applying that analysis, the District Court concluded that respondents were likely to prevail. Id., at 496-497. That conclusion was not an abuse of discretion, because on this record there are a number of plausible, less restrictive alternatives to the statute. 24 The primary alternative considered by the District Court was blocking and filtering software. Blocking and filtering software is an alternative that is less restrictive than COPA, and, in addition, likely more effective as a means of restricting children's access to materials harmful to them. The District Court, in granting the preliminary injunction, did so primarily because the plaintiffs had proposed that filters are a less restrictive alternative to COPA and the Government had not shown it would be likely to disprove the plaintiffs' contention at trial. Ibid. 25 Filters are less restrictive than COPA. They impose selective restrictions on speech at the receiving end, not universal restrictions at the source. Under a filtering regime, adults without children may gain access to speech they have a right to see without having to identify themselves or provide their credit card information. Even adults with children may obtain access to the same speech on the same terms simply by turning off the filter on their home computers. Above all, promoting the use of filters does not condemn as criminal any category of speech, and so the potential chilling effect is eliminated, or at least much diminished. All of these things are true, moreover, regardless of how broadly or narrowly the definitions in COPA are construed. 26 Filters also may well be more effective than COPA. First, a filter can prevent minors from seeing all pornography, not just pornography posted to the Web from America. The District Court noted in its factfindings that one witness estimated that 40% of harmful-to-minors content comes from overseas. Id., at 484. COPA does not prevent minors from having access to those foreign harmful materials. That alone makes it possible that filtering software might be more effective in serving Congress' goals. Effectiveness is likely to diminish even further if COPA is upheld, because the providers of the materials that would be covered by the statute simply can move their operations overseas. It is not an answer to say that COPA reaches some amount of materials that are harmful to minors; the question is whether it would reach more of them than less restrictive alternatives. In addition, the District Court found that verification systems may be subject to evasion and circumvention, for example, by minors who have their own credit cards. See id., at 484, 496-497. Finally, filters also may be more effective because they can be applied to all forms of Internet communication, including e-mail, not just communications available via the World Wide Web. 27 That filtering software may well be more effective than COPA is confirmed by the findings of the Commission on Child Online Protection, a blue-ribbon commission created by Congress in COPA itself. Congress directed the Commission to evaluate the relative merits of different means of restricting minors' ability to gain access to harmful materials on the Internet. Note following 47 U. S. C. § 231. It unambiguously found that filters are more effective than age-verification requirements. See Commission on Child Online Protection (COPA), Report to Congress 19-21, 23-25, 27 (Oct. 20, 2000) (assigning a score for "Effectiveness" of 7.4 for server-based filters and 6.5 for client-based filters, as compared to 5.9 for independent adult-ID verification, and 5.5 for credit card verification). Thus, not only has the Government failed to carry its burden of showing the District Court that the proposed alternative is less effective, but also a Government Commission appointed to consider the question has concluded just the opposite. That finding supports our conclusion that the District Court did not abuse its discretion in enjoining the statute. 28 Filtering software, of course, is not a perfect solution to the problem of children gaining access to harmful-to-minors materials. It may block some materials that are not harmful to minors and fail to catch some that are. See 31 F. Supp. 2d, at 492. Whatever the deficiencies of filters, however, the Government failed to introduce specific evidence proving that existing technologies are less effective than the restrictions in COPA. The District Court made a specific factfinding that "[n]o evidence was presented to the Court as to the percentage of time that blocking and filtering technology is over- or underinclusive." Ibid. In the absence of a showing as to the relative effectiveness of COPA and the alternatives proposed by respondents, it was not an abuse of discretion for the District Court to grant the preliminary injunction. The Government's burden is not merely to show that a proposed less restrictive alternative has some flaws; its burden is to show that it is less effective. Reno, 521 U. S., at 874. It is not enough for the Government to show that COPA has some effect. Nor do respondents bear a burden to introduce, or offer to introduce, evidence that their proposed alternatives are more effective. The Government has the burden to show they are less so. The Government having failed to carry its burden, it was not an abuse of discretion for the District Court to grant the preliminary injunction. 29 One argument to the contrary is worth mentioning—the argument that filtering software is not an available alternative because Congress may not require it to be used. That argument carries little weight, because Congress undoubtedly may act to encourage the use of filters. We have held that Congress can give strong incentives to schools and libraries to use them. United States v. American Library Assn., Inc., 539 U. S. 194 (2003). It could also take steps to promote their development by industry, and their use by parents. It is incorrect, for that reason, to say that filters are part of the current regulatory status quo. The need for parental cooperation does not automatically disqualify a proposed less restrictive alternative. Playboy Entertainment Group, 529 U. S., at 824 ("A court should not assume a plausible, less restrictive alternative would be ineffective; and a court should not presume parents, given full information, will fail to act"). In enacting COPA, Congress said its goal was to prevent the "widespread availability of the Internet" from providing "opportunities for minors to access materials through the World Wide Web in a manner that can frustrate parental supervision or control." Congressional Findings, note following 47 U. S. C. § 231 (quoting Pub. L. 105-277, Tit. XIV, § 1402(1), 112 Stat. 2681-736). COPA presumes that parents lack the ability, not the will, to monitor what their children see. By enacting programs to promote use of filtering software, Congress could give parents that ability without subjecting protected speech to severe penalties. 30 The closest precedent on the general point is our decision in Playboy Entertainment Group. Playboy Entertainment Group, like this case, involved a content-based restriction designed to protect minors from viewing harmful materials. The choice was between a blanket speech restriction and a more specific technological solution that was available to parents who chose to implement it. 529 U. S., at 825. Absent a showing that the proposed less restrictive alternative would not be as effective, we concluded, the more restrictive option preferred by Congress could not survive strict scrutiny. Id., at 826 (reversing because "[t]he record is silent as to the comparative effectiveness of the two alternatives"). In the instant case, too, the Government has failed to show, at this point, that the proposed less restrictive alternative will be less effective. The reasoning of Playboy Entertainment Group and the holdings and force of our precedents require us to affirm the preliminary injunction. To do otherwise would be to do less than the First Amendment commands. "The `starch' in our constitutional standards cannot be sacrificed to accommodate the enforcement choices of the Government." Id., at 830 (THOMAS, J., concurring). B 31 There are also important practical reasons to let the injunction stand pending a full trial on the merits. First, the potential harms from reversing the injunction outweigh those of leaving it in place by mistake. Where a prosecution is a likely possibility, yet only an affirmative defense is available, speakers may self-censor rather than risk the perils of trial. There is a potential for extraordinary harm and a serious chill upon protected speech. Cf. id., at 817 ("Error in marking that line exacts an extraordinary cost"). The harm done from letting the injunction stand pending a trial on the merits, in contrast, will not be extensive. No prosecutions have yet been undertaken under the law, so none will be disrupted if the injunction stands. Further, if the injunction is upheld, the Government in the interim can enforce obscenity laws already on the books. 32 Second, there are substantial factual disputes remaining in the case. As mentioned above, there is a serious gap in the evidence as to the effectiveness of filtering software. See supra, at 668. For us to assume, without proof, that filters are less effective than COPA would usurp the District Court's factfinding role. By allowing the preliminary injunction to stand and remanding for trial, we require the Government to shoulder its full constitutional burden of proof respecting the less restrictive alternative argument, rather than excuse it from doing so. 33 Third, and on a related point, the factual record does not reflect current technological reality—a serious flaw in any case involving the Internet. The technology of the Internet evolves at a rapid pace. Yet the factfindings of the District Court were entered in February 1999, over five years ago. Since then, certain facts about the Internet are known to have changed. Compare, e. g., 31 F. Supp. 2d, at 481 (36.7 million Internet hosts as of July 1998), with Internet Systems Consortium, Internet Domain Survey, Jan. 2004, http:// www.isc.org/index.pl?/ops/ds (as visited June 22, 2004, and available in Clerk of Court's case file) (233.1 million hosts as of Jan. 2004). It is reasonable to assume that other technological developments important to the First Amendment analysis have also occurred during that time. More and better filtering alternatives may exist than when the District Court entered its findings. Indeed, we know that after the District Court entered its factfindings, a congressionally appointed commission issued a report that found that filters are more effective than verification screens. See supra, at 668. 34 Delay between the time that a district court makes factfindings and the time that a case reaches this Court is inevitable, with the necessary consequence that there will be some discrepancy between the facts as found and the facts at the time the appellate court takes up the question. See, e. g., Benjamin, Stepping into the Same River Twice: Rapidly Changing Facts and the Appellate Process, 78 Texas L. Rev. 269, 290-296 (1999) (noting the problems presented for appellate courts by changing facts in the context of cases involving the Internet, and giving as a specific example the Court's decision in Reno, 521 U.S. 844). We do not mean, therefore, to set up an insuperable obstacle to fair review. Here, however, the usual gap has doubled because the case has been through the Court of Appeals twice. The additional two years might make a difference. By affirming the preliminary injunction and remanding for trial, we allow the parties to update and supplement the factual record to reflect current technological realities. 35 Remand will also permit the District Court to take account of a changed legal landscape. Since the District Court made its factfindings, Congress has passed at least two further statutes that might qualify as less restrictive alternatives to COPA—a prohibition on misleading domain names, and a statute creating a minors-safe "Dot Kids" domain. See supra, at 663. Remanding for trial will allow the District Court to take into account those additional potential alternatives. 36 On a final point, it is important to note that this opinion does not hold that Congress is incapable of enacting any regulation of the Internet designed to prevent minors from gaining access to harmful materials. The parties, because of the conclusion of the Court of Appeals that the statute's definitions rendered it unconstitutional, did not devote their attention to the question whether further evidence might be introduced on the relative restrictiveness and effectiveness of alternatives to the statute. On remand, however, the parties will be able to introduce further evidence on this point. This opinion does not foreclose the District Court from concluding, upon a proper showing by the Government that meets the Government's constitutional burden as defined in this opinion, that COPA is the least restrictive alternative available to accomplish Congress' goal. 37 * * * 38 On this record, the Government has not shown that the less restrictive alternatives proposed by respondents should be disregarded. Those alternatives, indeed, may be more effective than the provisions of COPA. The District Court did not abuse its discretion when it entered the preliminary injunction. The judgment of the Court of Appeals is affirmed, and the case is remanded for further proceedings consistent with this opinion. 39 It is so ordered. Notes: * Briefs ofamici curiae urging reversal were filed for DuPage County, Illinois, by Richard Hodyl, Jr., and Joseph E. Birkett; for the American Center for Law and Justice et al. by Jay Alan Sekulow, Stuart J. Roth, Colby M. May, Joel H. Thornton, John P. Tuskey, and Shannon D. Woodruff; for Focus on the Family et al. by William Wagner, Steve Reed, and Pat Trueman; for Morality in Media, Inc., by Paul J. McGeady; for Wall-Builders, Inc., by Barry C. Hodge; and for Senator John S. McCain et al. by Carol A. Clancy and Bruce A. Taylor. Briefs of amici curiae urging affirmance were filed for the American Society of Journalists and Authors et al. by Carl A. Solano, Theresa E. Loscalzo, Jennifer DuFault James, and Stephen J. Shapiro; for the Association of American Publishers, Inc., et al. by R. Bruce Rich, Jonathan Bloom, Jerry Berman, John B. Morris, Jr., and Robert Corn-Revere; and for Volunteer Lawyers for the Arts et al. by Seth M. Galanter, Charles H. Kennedy, Lois K. Perrin, and Elliot M. Mincberg. 40 JUSTICE STEVENS, with whom JUSTICE GINSBURG joins, concurring. 41 When it first reviewed the constitutionality of the Child Online Protection Act (COPA), the Court of Appeals held that the statute's use of "contemporary community standards" to identify materials that are "harmful to minors" was a serious, and likely fatal, defect. American Civil Liberties Union v. Reno, 217 F. 3d 162 (CA3 2000). I have already explained at some length why I agree with that holding. See Ashcroft v. American Civil Liberties Union, 535 U. S. 564, 603 (2002) (dissenting opinion) ("In the context of the Internet, ... community standards become a sword, rather than a shield. If a prurient appeal is offensive in a puritan village, it may be a crime to post it on the World Wide Web"). I continue to believe that the Government may not penalize speakers for making available to the general World Wide Web audience that which the least tolerant communities in America deem unfit for their children's consumption, cf. Reno v. American Civil Liberties Union, 521 U. S. 844, 878 (1997), and consider that principle a sufficient basis for deciding this case. 42 But COPA's use of community standards is not the statute's only constitutional defect. Today's decision points to another: that, as far as the record reveals, encouraging deployment of user-based controls, such as filtering software, would serve Congress' interest in protecting minors from sexually explicit Internet materials as well or better than attempting to regulate the vast content of the World Wide Web at its source, and at a far less significant cost to First Amendment values. 43 In registering my agreement with the Court's less-restrictive-means analysis, I wish to underscore just how restrictive COPA is. COPA is a content-based restraint on the dissemination of constitutionally protected speech. It enforces its prohibitions by way of the criminal law, threatening noncompliant Web speakers with a fine of as much as $50,000, and a term of imprisonment as long as six months, for each offense. 47 U.S.C. § 231(a). Speakers who "intentionally" violate COPA are punishable by a fine of up to $50,000 for each day of the violation. Ibid. And because implementation of the various adult-verification mechanisms described in the statute provides only an affirmative defense, § 231(c)(1), even full compliance with COPA cannot guarantee freedom from prosecution. Speakers who dutifully place their content behind age screens may nevertheless find themselves in court, forced to prove the lawfulness of their speech on pain of criminal conviction. Cf. Ashcroft v. Free Speech Coalition, 535 U. S. 234, 255 (2002). 44 Criminal prosecutions are, in my view, an inappropriate means to regulate the universe of materials classified as "obscene," since "the line between communications which `offend' and those which do not is too blurred to identify criminal conduct." Smith v. United States, 431 U. S. 291, 316 (1977) (STEVENS, J., dissenting). See also Marks v. United States, 430 U. S. 188, 198 (1977) (STEVENS, J., concurring in part and dissenting in part). COPA's creation of a new category of criminally punishable speech that is "harmful to minors" only compounds the problem. It may be, as JUSTICE BREYER contends, that the statute's coverage extends "only slightly" beyond the legally obscene, and therefore intrudes little into the realm of protected expression. Post, at 679 (dissenting opinion). But even with JUSTICE BREYER's guidance, I find it impossible to identify just how far past the already ill-defined territory of "obscenity" he thinks the statute extends. Attaching criminal sanctions to a mistaken judgment about the contours of the novel and nebulous category of "harmful to minors" speech clearly imposes a heavy burden on the exercise of First Amendment freedoms. 45 COPA's criminal penalties are, moreover, strong medicine for the ill that the statute seeks to remedy. To be sure, our cases have recognized a compelling interest in protecting minors from exposure to sexually explicit materials. See, e. g., Ginsberg v. New York, 390 U. S. 629, 640 (1968). As a parent, grandparent, and great-grandparent, I endorse that goal without reservation. As a judge, however, I must confess to a growing sense of unease when the interest in protecting children from prurient materials is invoked as a justification for using criminal regulation of speech as a substitute for, or a simple backup to, adult oversight of children's viewing habits. 46 In view of the gravity of the burdens COPA imposes on Web speech, the possibility that Congress might have accomplished the goal of protecting children from harmful materials by other, less drastic means is a matter to be considered with special care. With that observation, I join the opinion of the Court. 47 JUSTICE SCALIA, dissenting. 48 I agree with JUSTICE BREYER's conclusion that the Child Online Protection Act (COPA), 47 U. S. C. § 231, is constitutional. See post, at 689 (dissenting opinion). Both the Court and JUSTICE BREYER err, however, in subjecting COPA to strict scrutiny. Nothing in the First Amendment entitles the type of material covered by COPA to that exacting standard of review. "We have recognized that commercial entities which engage in `the sordid business of pandering' by `deliberately emphasiz[ing] the sexually provocative aspects of [their nonobscene products], in order to catch the salaciously disposed,' engage in constitutionally unprotected behavior." United States v. Playboy Entertainment Group, Inc., 529 U. S. 803, 831 (2000) (SCALIA, J., dissenting) (quoting Ginzburg v. United States, 383 U. S. 463, 467, 472 (1966)). See also Los Angeles v. Alameda Books, Inc., 535 U.S. 425, 443-444 (2002) (SCALIA, J., concurring); FW/PBS, Inc. v. Dallas, 493 U. S. 215, 256-261 (1990) (SCALIA, J., concurring in part and dissenting in part). 49 There is no doubt that the commercial pornography covered by COPA fits this description. The statute applies only to a person who, "as a regular course of such person's trade or business, with the objective of earning a profit," 47 U. S. C. § 231(e)(2)(B), and "with knowledge of the character of the material," § 231(a)(1), communicates material that depicts certain specified sexual acts and that "is designed to appeal to, or is designed to pander to, the prurient interest," § 231(e)(6)(A). Since this business could, consistent with the First Amendment, be banned entirely, COPA's lesser restrictions raise no constitutional concern. 50 JUSTICE BREYER, with whom THE CHIEF JUSTICE and JUSTICE O'CONNOR join, dissenting. 51 The Child Online Protection Act (Act), 47 U. S. C. § 231, seeks to protect children from exposure to commercial pornography placed on the Internet. It does so by requiring commercial providers to place pornographic material behind Internet "screens" readily accessible to adults who produce age verification. The Court recognizes that we should "`proceed ... with care before invalidating the Act,'" while pointing out that the "imperative of according respect to the Congress ... does not permit us to depart from well-established First Amendment principles." Ante, at 660. I agree with these generalities. Like the Court, I would subject the Act to "the most exacting scrutiny," Turner Broadcasting System, Inc. v. FCC, 512 U. S. 622, 642 (1994), requiring the Government to show that any restriction of nonobscene expression is "narrowly drawn" to further a "compelling interest" and that the restriction amounts to the "least restrictive means" available to further that interest, Sable Communications of Cal., Inc. v. FCC, 492 U. S. 115, 126 (1989). See also Denver Area Ed. Telecommunications Consortium, Inc. v. FCC, 518 U. S. 727, 755-756 (1996). 52 Nonetheless, my examination of (1) the burdens the Act imposes on protected expression, (2) the Act's ability to further a compelling interest, and (3) the proposed "less restrictive alternatives" convinces me that the Court is wrong. I cannot accept its conclusion that Congress could have accomplished its statutory objective—protecting children from commercial pornography on the Internet—in other, less restrictive ways. 53 * Although the Court rests its conclusion upon the existence of less restrictive alternatives, I must first examine the burdens that the Act imposes upon protected speech. That is because the term "less restrictive alternative" is a comparative term. An "alternative" is "less restrictive" only if it will work less First Amendment harm than the statute itself, while at the same time similarly furthering the "compelling" interest that prompted Congress to enact the statute. Unlike the majority, I do not see how it is possible to make this comparative determination without examining both the extent to which the Act regulates protected expression and the nature of the burdens it imposes on that expression. That examination suggests that the Act, properly interpreted, imposes a burden on protected speech that is no more than modest. 54 * The Act's definitions limit the material it regulates to material that does not enjoy First Amendment protection, namely, legally obscene material, and very little more. A comparison of this Court's definition of unprotected, "legally obscene," material with the Act's definitions makes this clear. Material is legally obscene if 55 "(a) . . . `the average person, applying contemporary community standards' would find that the work, taken as a whole, appeals to the prurient interest ...; (b) ... the work depicts or describes, in a patently offensive way, sexual conduct specifically defined by the applicable state law; and (c) ... the work, taken as a whole, lacks serious literary, artistic, political, or scientific value." Miller v. California, 413 U. S. 15, 24 (1973). 56 The present statute defines the material that it regulates as material that meets all of the following criteria: 57 "(A) the average person, applying contemporary community standards, would find, taking the material as a whole and with respect to minors, [that the material] is designed to appeal to, or is designed to pander to, the prurient interest; 58 "(B) [the material] depicts, describes, or represents, in a manner patently offensive with respect to minors, an actual or simulated sexual act or sexual contact, an actual or simulated normal or perverted sexual act, or a lewd exhibition of the genitals or post-pubescent female breast; and 59 "(C) [the material] taken as a whole, lacks serious literary, artistic, political, or scientific value for minors." 47 U. S. C. § 231(e)(6) (emphasis added). 60 Both definitions define the relevant material through use of the critical terms "prurient interest" and "lacks serious literary, artistic, political, or scientific value." Insofar as material appeals to, or panders to, "the prurient interest," it simply seeks a sexual response. Insofar as "patently offensive" material with "no serious value" simply seeks that response, it does not seek to educate, it does not seek to elucidate views about sex, it is not artistic, and it is not literary. Compare, e. g., Erznoznik v. Jacksonville, 422 U. S. 205, 213 (1975) (invalidating an ordinance regulating nudity in films, where the ban was not confined to "sexually explicit nudity" or otherwise limited), with Ginzburg v. United States, 383 U. S. 463, 471 (1966) (finding unprotected material that was "created, represented and sold solely as a claimed instrument of the sexual stimulation it would bring"). That is why this Court, in Miller, held that the First Amendment did not protect material that fit its definition. 61 The only significant difference between the present statute and Miller's definition consists of the addition of the words "with respect to minors," § 231(e)(6)(A), and "for minors," § 231(e)(6)(C). But the addition of these words to a definition that would otherwise cover only obscenity expands the statute's scope only slightly. That is because the material in question (while potentially harmful to young children) must, first, appeal to the "prurient interest" of, i. e., seek a sexual response from, some group of adolescents or postadolescents (since young children normally do not so respond). And material that appeals to the "prurient interest[s]" of some group of adolescents or postadolescents will almost inevitably appeal to the "prurient interest[s]" of some group of adults as well. 62 The "lack of serious value" requirement narrows the statute yet further—despite the presence of the qualification "for minors." That is because one cannot easily imagine material that has serious literary, artistic, political, or scientific value for a significant group of adults, but lacks such value for any significant group of minors. Thus, the statute, read literally, insofar as it extends beyond the legally obscene, could reach only borderline cases. And to take the words of the statute literally is consistent with Congress' avowed objective in enacting this law; namely, putting material produced by professional pornographers behind screens that will verify the age of the viewer. See S. Rep. No. 105-225, p. 3 (1998) (hereinafter S. Rep.) ("The bill seeks to restrict access to commercial pornography on the Web by requiring those engaged in the business of the commercial distribution of material that is harmful to minors to take certain prescribed steps to restrict access to such material by minors . . ."); H. R. Rep. No. 105-775, pp. 5, 14 (1998) (hereinafter H. R. Rep.) (explaining that the bill is aimed at the sale of pornographic materials and provides a defense for the "commercial purveyors of pornography" that the bill seeks to regulate). 63 These limitations on the statute's scope answer many of the concerns raised by those who attack its constitutionality. Respondents fear prosecution for the Internet posting of material that does not fall within the statute's ambit as limited by the "prurient interest" and "no serious value" requirements; for example: an essay about a young man's experience with masturbation and sexual shame; "a serious discussion about birth control practices, homosexuality, . . . or the consequences of prison rape"; an account by a 15-year-old, written for therapeutic purposes, of being raped when she was 13; a guide to self-examination for testicular cancer; a graphic illustration of how to use a condom; or any of the other postings of modern literary or artistic works or discussions of sexual identity, homosexuality, sexually transmitted diseases, sex education, or safe sex, let alone Aldous Huxley's Brave New World, J. D. Salinger's Catcher in the Rye, or, as the complaint would have it, "Ken Starr's report on the Clinton-Lewinsky scandal." See G. Dillard, Shame on Me, Lodging 609-612; Reno v. American Civil Liberties Union, 521 U. S. 844, 871 (1997); Brief for Respondents 29 (citing Lodging 732-736); Brief for American Society of Journalists and Authors et al. as Amici Curiae 8, and n. 7 (referring to a guide on the medical advice site www.afraidtoask.com); 322 F. 3d 240, 268 (CA3 2003) (citing Safer Sex Institute, safersex.org/condoms/how.to.use); Complaint ¶ 1, Lodging 40-41 ("a Mapplethorpe photograph," referring to the work of controversial artist Robert Mapplethorpe); id., at 667-669 (Pl. Exh. 80, PlanetOut Youth Message Boards (Internet discussion board for gay teens)); declaration of Adam K. Glickman, president and CEO, Addazi, Inc. d/b/a Condomania, Supp. Lodging of Petitioner 4-10 (describing how Web site has been used for health education); declaration of Roberta Speyer, president and publisher, OBGYN.net, id., at 15-16 (describing Web site as resource for obstetrics, gynecology, and women's health issues); Brief for Volunteer Lawyers for the Arts et al. as Amici Curiae 15 (listing works of literature removed from some schools). 64 These materials are not both (1) "designed to appeal to, or ... pander to, the prurient interest" of significant groups of minors and (2) lacking in "serious literary, artistic, political, or scientific value" for significant groups of minors. §§ 231(e)(6)(A), (C). Thus, they fall outside the statute's definition of the material that it restricts, a fact the Government acknowledged at oral argument. Tr. of Oral Arg. 50-51. 65 I have found nothing elsewhere in the statute's language that broadens its scope. Other qualifying phrases, such as "taking the material as a whole," §§ 231(e)(6)(A), (C), and "for commercial purposes," § 231(a)(1), limit the statute's scope still more, requiring, for example, that individual images be considered in context. See Roth v. United States, 354 U. S. 476, 490 (1957). In sum, the Act's definitions limit the statute's scope to commercial pornography. It affects unprotected obscene material. Given the inevitable uncertainty about how to characterize close-to-obscene material, it could apply to (or chill the production of) a limited class of borderline material that courts might ultimately find is protected. But the examples I have just given fall outside that class. B 66 The Act does not censor the material it covers. Rather, it requires providers of the "harmful to minors" material to restrict minors' access to it by verifying age. They can do so by inserting screens that verify age using a credit card, adult personal identification number, or other similar technology. See § 231(c)(1). In this way, the Act requires creation of an internet screen that minors, but not adults, will find difficult to bypass. 67 I recognize that the screening requirement imposes some burden on adults who seek access to the regulated material, as well as on its providers. The cost is, in part, monetary. The parties agreed that a Web site could store card numbers or passwords at between 15 and 20 cents per number. American Civil Liberties Union v. Reno, 31 F. Supp. 2d 473, 488-489, ¶¶ 45-47 (ED Pa. 1999). And verification services provide free verification to Web site operators, while charging users less than $20 per year. Id., at 489-490, ¶¶ 48-53. According to the trade association for the commercial pornographers who are the statute's target, use of such verification procedures is "standard practice" in their online operations. See S. Rep., at 7; Legislative Proposals to Protect Children from Inappropriate Materials on the Internet: Hearing on H. R. 3783 et al. before the House Subcommittee on Telecommunications, Trade and Consumer Protection of the House Committee on Commerce, 105th Cong., 2d Sess., 46, 48 (1998) (prepared statement of Jeffrey J. Douglas, Executive Director and Chairman, Free Speech Coalition (calling the proposed child-protecting mechanisms "effective and appropriate")). 68 In addition to the monetary cost, and despite strict requirements that identifying information be kept confidential, see 47 U. S. C. §§ 231(d)(1), 501, the identification requirements inherent in age screening may lead some users to fear embarrassment. See 31 F. Supp. 2d, at 495. Both monetary costs and potential embarrassment can deter potential viewers and, in that sense, the statute's requirements may restrict access to a site. But this Court has held that in the context of congressional efforts to protect children, restrictions of this kind do not automatically violate the Constitution. And the Court has approved their use. See, e.g., United States v. American Library Assn., Inc., 539 U. S. 194, 209 (2003) (plurality opinion) ("[T]he Constitution does not guarantee the right to acquire information at a public library without any risk of embarrassment"). Cf. Reno, 521 U. S., at 890 (O'CONNOR, J., concurring in judgment in part and dissenting in part) (calling the age-verification requirement similar to "a bouncer [who] checks a person's driver's license before admitting him to a nightclub"). 69 In sum, the Act at most imposes a modest additional burden on adult access to legally obscene material, perhaps imposing a similar burden on access to some protected borderline obscene material as well. II 70 I turn next to the question of "compelling interest," that of protecting minors from exposure to commercial pornography. No one denies that such an interest is "compelling." See Denver Area Ed. Telecommunications Consortium, Inc., 518 U. S., at 743 (opinion of BREYER, J.) (interest in protecting minors is "compelling"); Sable Communications, 492 U. S., at 126 (same); Ginsberg v. New York, 390 U. S. 629, 639-640 (1968). Rather, the question here is whether the Act, given its restrictions on adult access, significantly advances that interest. In other words, is the game worth the candle? 71 The majority argues that it is not, because of the existence of "blocking and filtering software." Ante, at 666-670. The majority refers to the presence of that software as a "less restrictive alternative." But that is a misnomer—a misnomer that may lead the reader to believe that all we need do is look to see if the blocking and filtering software is less restrictive; and to believe that, because in one sense it is (one can turn off the software), that is the end of the constitutional matter. 72 But such reasoning has no place here. Conceptually speaking, the presence of filtering software is not an alternative legislative approach to the problem of protecting children from exposure to commercial pornography. Rather, it is part of the status quo, i. e., the backdrop against which Congress enacted the present statute. It is always true, by definition, that the status quo is less restrictive than a new regulatory law. It is always less restrictive to do nothing than to do something. But "doing nothing" does not address the problem Congress sought to address—namely, that, despite the availability of filtering software, children were still being exposed to harmful material on the Internet. 73 Thus, the relevant constitutional question is not the question the Court asks: Would it be less restrictive to do nothing? Of course it would be. Rather, the relevant question posits a comparison of (a) a status quo that includes filtering software with (b) a change in that status quo that adds to it an age-verification screen requirement. Given the existence of filtering software, does the problem Congress identified remain significant? Does the Act help to address it? These are questions about the relation of the Act to the compelling interest. Does the Act, compared to the status quo, significantly advance the ball? (An affirmative answer to these questions will not justify "[a]ny restriction on speech," as the Court claims, ante, at 666, for a final answer in respect to constitutionality must take account of burdens and alternatives as well.) 74 The answers to these intermediate questions are clear: Filtering software, as presently available, does not solve the "child protection" problem. It suffers from four serious inadequacies that prompted Congress to pass legislation instead of relying on its voluntary use. First, its filtering is faulty, allowing some pornographic material to pass through without hindrance. Just last year, in American Library Assn., JUSTICE STEVENS described "fundamental defects in the filtering software that is now available or that will be available in the foreseeable future." 539 U. S., at 221 (dissenting opinion). He pointed to the problem of underblocking: "Because the software relies on key words or phrases to block undesirable sites, it does not have the capacity to exclude a precisely defined category of images." Ibid. That is to say, in the absence of words, the software alone cannot distinguish between the most obscene pictorial image and the Venus de Milo. No Member of this Court disagreed. 75 Second, filtering software costs money. Not every family has the $40 or so necessary to install it. See 31 F. Supp. 2d, at 492, ¶ 65. By way of contrast, age screening costs less. See supra, at 682 (citing costs of up to 20 cents per password or $20 per user for an identification number). 76 Third, filtering software depends upon parents willing to decide where their children will surf the Web and able to enforce that decision. As to millions of American families, that is not a reasonable possibility. More than 28 million school age children have both parents or their sole parent in the work force, at least 5 million children are left alone at home without supervision each week, and many of those children will spend afternoons and evenings with friends who may well have access to computers and more lenient parents. See United States v. Playboy Entertainment Group, Inc., 529 U. S. 803, 842 (2000) (BREYER, J., dissenting). 77 Fourth, software blocking lacks precision, with the result that those who wish to use it to screen out pornography find that it blocks a great deal of material that is valuable. As JUSTICE STEVENS pointed out, "the software's reliance on words to identify undesirable sites necessarily results in the blocking of thousands of pages that contain content that is completely innocuous for both adults and minors, and that no rational person could conclude matches the filtering companies' category definitions, such as pornography or sex." American Library Assn., supra, at 222 (internal quotation marks omitted). Indeed, the American Civil Liberties Union (ACLU), one of the respondents here, told Congress that filtering software "block[s] out valuable and protected information, such as information about the Quaker religion, and web sites including those of the American Association of University Women, the AIDS Quilt, the Town Hall Political Site (run by the Family Resource Center, Christian Coalition and other conservative groups)." Hearing on Internet Indecency before the Senate Committee on Commerce, Science, and Transportation, 105th Cong., 2d Sess., 64 (1998). The software "is simply incapable of discerning between constitutionally protected and unprotected speech." Id., at 65. It "inappropriately blocks valuable, protected speech, and does not effectively block the sites [it is] intended to block." Id., at 66 (citing reports documenting overblocking). 78 Nothing in the District Court record suggests the contrary. No respondent has offered to produce evidence at trial to the contrary. No party has suggested, for example, that technology allowing filters to interpret and discern among images has suddenly become, or is about to become, widely available. Indeed, the Court concedes that "[f]iltering software, of course, is not a perfect solution to the problem." Ante, at 668. 79 In sum, a "filtering software status quo" means filtering that underblocks, imposes a cost upon each family that uses it, fails to screen outside the home, and lacks precision. Thus, Congress could reasonably conclude that a system that relies entirely upon the use of such software is not an effective system. And a law that adds to that system an age-verification screen requirement significantly increases the system's efficacy. That is to say, at a modest additional cost to those adults who wish to obtain access to a screened program, that law will bring about better, more precise blocking, both inside and outside the home. 80 The Court's response—that 40% of all pornographic material may be of foreign origin—is beside the point. Ante, at 667 (citing the District Court's findings). Even assuming (I believe unrealistically) that all foreign originators will refuse to use screening, the Act would make a difference in respect to 60% of the Internet's commercial pornography. I cannot call that difference insignificant. 81 The upshot is that Congress could reasonably conclude that, despite the current availability of filtering software, a child protection problem exists. It also could conclude that a precisely targeted regulatory statute, adding an age-verification requirement for a narrow range of material, would more effectively shield children from commercial pornography. 82 Is this justification sufficient? The lower courts thought not. But that is because those courts interpreted the Act as imposing far more than a modest burden. They assumed an interpretation of the statute in which it reached far beyond legally obscene and borderline-obscene material, affecting material that, given the interpretation set forth above, would fall well outside the Act's scope. But we must interpret the Act to save it, not to destroy it. NLRB v. Jones & Laughlin Steel Corp., 301 U. S. 1, 30 (1937). So interpreted, see supra, at 678-682, the Act imposes a far lesser burden on access to protected material. Given the modest nature of that burden and the likelihood that the Act will significantly further Congress' compelling objective, the Act may well satisfy the First Amendment's stringent tests. Cf. Sable Communications, 492 U. S., at 130. Indeed, it does satisfy the First Amendment unless, of course, there is a genuine alternative, "less restrictive" way similarly to further that objective. III 83 I turn, then, to the actual "less restrictive alternatives" that the Court proposes. The Court proposes two real alternatives, i. e., two potentially less restrictive ways in which Congress might alter the status quo in order to achieve its "compelling" objective. 84 First, the Government might "act to encourage" the use of blocking and filtering software. Ante, at 669. The problem is that any argument that rests upon this alternative proves too much. If one imagines enough Government resources devoted to the problem and perhaps additional scientific advances, then, of course, the use of software might become as effective and less restrictive. Obviously, the Government could give all parents, schools, and Internet cafes free computers with filtering programs already installed, hire federal employees to train parents and teachers on their use, and devote millions of dollars to the development of better software. The result might be an alternative that is extremely effective. 85 But the Constitution does not, because it cannot, require the Government to disprove the existence of magic solutions, i. e., solutions that, put in general terms, will solve any problem less restrictively but with equal effectiveness. Otherwise, "the undoubted ability of lawyers and judges," who are not constrained by the budgetary worries and other practical parameters within which Congress must operate, "to imagine some kind of slightly less drastic or restrictive an approach would make it impossible to write laws that deal with the harm that called the statute into being." Playboy Entertainment Group, 529 U. S., at 841 (BREYER, J., dissenting). As Justice Blackmun recognized, a "judge would be unimaginative indeed if he could not come up with something a little less `drastic' or a little less `restrictive' in almost any situation, and thereby enable himself to vote to strike legislation down." Illinois Bd. of Elections v. Socialist Workers Party, 440 U. S. 173, 188-189 (1979) (concurring opinion). Perhaps that is why no party has argued seriously that additional expenditure of government funds to encourage the use of screening is a "less restrictive alternative." 86 Second, the majority suggests decriminalizing the statute, noting the "chilling effect" of criminalizing a category of speech. Ante, at 667. To remove a major sanction, however, would make the statute less effective, virtually by definition. IV 87 My conclusion is that the Act, as properly interpreted, risks imposition of minor burdens on some protected material— burdens that adults wishing to view the material may overcome at modest cost. At the same time, it significantly helps to achieve a compelling congressional goal, protecting children from exposure to commercial pornography. There is no serious, practically available "less restrictive" way similarly to further this compelling interest. Hence the Act is constitutional. V 88 The Court's holding raises two more general questions. First, what has happened to the "constructive discourse between our courts and our legislatures" that "is an integral and admirable part of the constitutional design"? Blakely v. Washington, ante, at 326 (KENNEDY, J., dissenting). After eight years of legislative effort, two statutes, and three Supreme Court cases the Court sends this case back to the District Court for further proceedings. What proceedings? I have found no offer by either party to present more relevant evidence. What remains to be litigated? I know the Court says that the parties may "introduce further evidence" as to the "relative restrictiveness and effectiveness of alternatives to the statute." Ante, at 673. But I do not understand what that new evidence might consist of. 89 Moreover, Congress passed the current statute "[i]n response to the Court's decision in Reno" striking down an earlier statutory effort to deal with the same problem. Ante, at 661. Congress read Reno with care. It dedicated itself to the task of drafting a statute that would meet each and every criticism of the predecessor statute that this Court set forth in Reno. It incorporated language from the Court's precedents, particularly the Miller standard, virtually verbatim. Compare 413 U.S., at 24, with § 231(e)(6). And it created what it believed was a statute that would protect children from exposure to obscene professional pornography without obstructing adult access to material that the First Amendment protects. See H. R. Rep., at 5 (explaining that the bill was "carefully drafted to respond to the Supreme Court's decision in Reno"); S. Rep., at 2 (same). What else was Congress supposed to do? 90 I recognize that some Members of the Court, now or in the past, have taken the view that the First Amendment simply does not permit Congress to legislate in this area. See, e. g., Ginzburg, 383 U.S., at 476 (Black, J., dissenting) ("[T]he Federal Government is without any power whatever under the Constitution to put any type of burden on speech and expression of ideas of any kind"). Others believe that the Amendment does not permit Congress to legislate in certain ways, e. g., through the imposition of criminal penalties for obscenity. See, e. g., ante, at 674-675 (STEVENS, J., concurring). There are strong constitutional arguments favoring these views. But the Court itself does not adopt those views. Instead, it finds that the Government has not proved the nonexistence of "less restrictive alternatives." That finding, if appropriate here, is universally appropriate. And if universally appropriate, it denies to Congress, in practice, the legislative leeway that the Court's language seems to promise. If this statute does not pass the Court's "less restrictive alternative" test, what does? If nothing does, then the Court should say so clearly. 91 As I have explained, I believe the First Amendment permits an alternative holding. We could construe the statute narrowly—as I have tried to do—removing nearly all protected material from its scope. By doing so, we could reconcile its language with the First Amendment's demands. We would "save" the statute, "not . . . destroy" it. NLRB, 301 U. S., at 30. Accord, McConnell v. Federal Election Comm'n, 540 U. S. 93, 180 (2003) (where a saving construction of the statute's language "`is fairly possible,'" we must adopt it (quoting Crowell v. Benson, 285 U. S. 22, 62 (1932))). And in the process, we would permit Congress to achieve its basic child-protecting objectives. 92 Second, will the majority's holding in practice mean greater or lesser protection for expression? I do not find the answer to this question obvious. The Court's decision removes an important weapon from the prosecutorial arsenal. That weapon would have given the Government a choice—a choice other than "ban totally or do nothing at all." The Act tells the Government that, instead of prosecuting bans on obscenity to the maximum extent possible (as respondents have urged as yet another "alternative"), it can insist that those who make available material that is obscene or close to obscene keep that material under wraps, making it readily available to adults who wish to see it, while restricting access to children. By providing this third option—a "middle way"—the Act avoids the need for potentially speech-suppressing prosecutions. 93 That matters in a world where the obscene and the nonobscene do not come tied neatly into separate, easily distinguishable, packages. In that real world, this middle way might well have furthered First Amendment interests by tempering the prosecutorial instinct in borderline cases. At least, Congress might have so believed. And this likelihood, from a First Amendment perspective, might ultimately have proved more protective of the rights of viewers to retain access to expression than the all-or-nothing choice available to prosecutors in the wake of the majority's opinion. 94 For these reasons, I dissent.

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