Also known as: ACLU
Written by attorneys · grounded in primary & secondary sources — see below
A national organization whose primary purpose is to help enforce and preserve individual rights and liberties guaranteed by federal and state constitutions.
Select any source to read its text and confirm it supports the definition.
Audrey Ashton received a letter from the American Civil Liberties Union explaining her rights in an ongoing dispute and offering free representation to advance civil liberties goals. The organization prepared the communication as part of its advocacy work. A local ordinance attempted to prohibit such outreach entirely. The letter campaign proceeded because the activity qualified as protected expressive conduct.
Anita Ali joined an American Civil Liberties Union suit against a rule that blocked adult access to protected internet content without workable age verification. The organization argued the measure functioned as an overbroad restriction. The court evaluated whether the filters could be bypassed by adults. The claim advanced because no reliable gateway existed at scale.
Abigail Alvarez sought American Civil Liberties Union support in a dispute over parental recognition after genetic testing. The organization filed an amicus brief urging recognition of multiple parents. The court considered policy factors in weighing presumptions. The brief highlighted stable family arrangements without creating new categories.
Ariana Azizi contacted the American Civil Liberties Union after a city rejected a proposed display on public land. The organization analyzed whether the rejection treated private speech as government expression. The court applied an observer test to classify the monument. The analysis turned on whether a reasonable viewer would attribute the message to the government.
Alice Atkins worked with the American Civil Liberties Union to challenge provisions of a federal campaign finance statute. The organization joined other plaintiffs alleging unconstitutional limits on speech. The litigation examined contributions and expenditures under prior precedents. The suit tested whether the amendments survived constitutional review.
Ava Adebayo received American Civil Liberties Union assistance in a case testing federal authority over local conduct. The organization submitted arguments on the limits of enumerated powers. The court assessed whether the statute regulated activity with substantial effects on interstate commerce. The brief addressed institutional roles in drawing constitutional lines.
The organization works to enforce and preserve individual rights and liberties under federal and state constitutions through litigation and advocacy.
It frequently serves as plaintiff or amicus curiae in challenges involving speech protections, compelled expression, and internet regulation.
No. Its letters and outreach receive greater First Amendment protection than in-person commercial solicitation and may not be banned outright absent actual deception.
…Bill of Rights even though clear and bright lines are often absent in the latter class of disputes. See County of Allegheny v. American Civil Liberties Union, Greater Pittsburgh Chapter , 492 U. S. 573, 630 (1989) (O'Connor, J., concurring in part and concurring in judgment) ("We cannot avoid the obligation to draw lines, often close and…