Cite as: 542 U. S. 656 (2004) Opinion of the Court stantial 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. I A 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. 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: "any communication, picture, image, graphic image file, article, recording, writing, or other matter of any kind that is obscene or that"(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; "(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