47 U.S. Code § 231 - Restriction of access by minors to materials commercially distributed by means of World Wide Web that are harmful to minors
Whoever knowingly and with knowledge of the character of the material, in interstate or foreign commerce by means of the World Wide Web, makes any communication for commercial purposes that is available to any minor and that includes any material that is harmful to minors shall be fined not more than $50,000, imprisoned not more than 6 months, or both.
In addition to the penalties under paragraph (1), whoever intentionally violates such paragraph shall be subject to a fine of not more than $50,000 for each violation. For purposes of this paragraph, each day of violation shall constitute a separate violation.
No cause of action may be brought in any court or administrative agency against any person on account of any activity that is not in violation of any law punishable by criminal or civil penalty, and that the person has taken in good faith to implement a defense authorized under this subsection or otherwise to restrict or prevent the transmission of, or access to, a communication specified in this section.
The term “by means of the World Wide Web” means by placement of material in a computer server-based file archive so that it is publicly accessible, over the Internet, using hypertext transfer protocol or any successor protocol.
A person shall be considered to make a communication for commercial purposes only if such person is engaged in the business of making such communications.
The term “engaged in the business” 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). A person may be considered to be engaged in the business of making, by means of the World Wide Web, communications for commercial purposes that include material that is harmful to minors, only if the person knowingly causes the material that is harmful to minors to be posted on the World Wide Web or knowingly solicits such material to be posted on the World Wide Web.
The term “Internet” means the combination of computer facilities and electromagnetic transmission media, and related equipment and software, comprising the interconnected worldwide network of computer networks that employ the Transmission Control Protocol/Internet Protocol or any successor protocol to transmit information.
The term “Internet access service” means a service that enables users to access content, information, electronic mail, or other services offered over the Internet, and may also include access to proprietary content, information, and other services as part of a package of services offered to consumers. Such term does not include telecommunications services.
The term “Internet information location tool” means a service that refers or links users to an online location on the World Wide Web. Such term includes directories, indices, references, pointers, and hypertext links.
 So in original. Probably should be “section,”.
Pub. L. 105–277, div. C, title XIV, § 1405, Oct. 21, 1998, 112 Stat. 2681–739, as amended by Pub. L. 106–113, div. B, § 1000(a)(9) [title V, § 5001(b)–(f), Nov. 29, 1999, 113 Stat. 1536, 1501A–591, 1501–592; Pub. L. 106–229, title IV, § 401, June 30, 2000, 114 Stat. 476, provided that:
“Any methods so identified shall be used as the basis for making legislative recommendations to the Congress under subsection (d)(3).