The Communications Decency Act of 1996 (CDA) was the United States Congress's first notable attempt to regulate pornographic material on the Internet. In the 1997 landmark case Reno v. ACLU, the United States Supreme Court unanimously struck the act's anti-indecency provisions.

The Act is the short name of Title V of the Telecommunications Act of 1996, as specified in Section 501 of the 1996 Act. Senators James Exon and Slade Gorton introduced it to the Senate Committee of Commerce, Science, and Transportation in 1995. The amendment that became the CDA was added to the Telecommunications Act in the Senate by an 8118 vote on June 15, 1995.As eventually passed by Congress, Title V affected the Internet (and online communications) in two significant ways. First, it attempted to regulate both indecency (when available to children) and obscenity in cyberspace. Second, Section 230 of title 47 of the U.S. Code, part of a codification of the Communications Act of 1934 (Section 9 of the Communications Decency Act / Section 509 of the Telecommunications Act of 1996) has been interpreted to mean that operators of Internet services are not publishers (and thus not legally liable for the words of third parties who use their services).

The United States Congress is the legislature of the federal government of the United States. It is bicameral, being composed of a lower body, the House of Representatives, and an upper body, the Senate. The Congress meets in the United States Capitol in Washington, D.C. Both senators and representatives are chosen through direct election, though vacancies in the Senate may be filled by a governor's appointment. Congress has 535 voting members: 100 senators and 435 representatives. The vice president of the United States has a vote in the Senate only when senators are evenly divided. The House of Representatives has six non-voting members.The sitting of a Congress is for a two-year term, at present, beginning every other January. Elections are held every even-numbered year on Election Day. The members of the House of Representatives are elected for the two-year term of a Congress. The Reapportionment Act of 1929 establishes that they be elected in single-member constituencies or districts by first-past-the-post and that Congressional districts be apportioned to states by population every ten years using the United States Census results, provided that each state has at least one Congressional representative. Each senator is elected at-large in their state for a six-year term, with terms staggered, so every two years approximately one-third of the Senate is up for election. Each state, regardless of population or size, has two senators, so currently, there are 100 senators for the 50 states.

Article One of the United States Constitution requires that members of Congress must be at least 25 years old (House) or at least 30 years old (Senate), have been a citizen of the United States for seven (House) or nine (Senate) years, and be an inhabitant of the state which they represent. Members in both chambers may stand for re-election an unlimited number of times.

The Congress was created by the Constitution of the United States and first met in 1789, replacing in its legislative function the Congress of the Confederation. Although not legally mandated, in practice since the 19th century, Congress members are typically affiliated with one of the two major parties, the Democratic Party or the Republican Party, and only rarely with a third party or independents affiliated with no party. In the case of the latter, the lack of affiliation with a political party does not mean that such members are unable to caucus with members of the political parties. Members can also switch parties at any time, although this is quite uncommon.