Also known as: substantial overbreadth · overbroad · overbreadth doctrine
Written by attorneys · grounded in primary & secondary sources — see below
A First Amendment doctrine that renders a law facially invalid when it prohibits a substantial amount of protected speech judged in relation to the statute's plainly legitimate sweep. The challenger bears the burden of demonstrating substantial overbreadth. A statute that is not substantially overbroad remains enforceable against unprotected conduct.
Skylar Sullivan attempted to distribute religious pamphlets and discuss political views inside a public airport terminal. Airport officials enforced a rule banning all First Amendment activities throughout the facility. The court found the rule substantially overbroad because it swept in virtually every form of protected expression far beyond any narrow security or traffic concern.
Skylar Sullivan challenged a municipal rule that banned all leafleting and solicitation inside a public building to prevent any possible disruption. Officials defended the rule as advancing workplace safety. The court held the rule substantially overbroad because it reached a substantial amount of protected speech far beyond the narrow legitimate applications to actual obstruction.
Select any source to read its text and confirm it supports the definition.
Sebastian Santos was prosecuted under a federal law criminalizing any visual depiction of animal cruelty. He argued the statute reached hunting videos and other protected expression. The court rejected the facial challenge because Santos failed to show that the law prohibited a substantial amount of protected speech relative to its legitimate applications to actual cruelty.
Spencer Silver was charged under a city ordinance that banned any symbol placed on property if it aroused anger or resentment on the basis of race or religion. He moved to dismiss on overbreadth grounds. The court found the ordinance substantially overbroad because its language reached protected expression causing only hurt feelings rather than true threats.
Sterling Dynamics challenged a federal limit on corporate contributions that swept in independent expenditures by media companies. The company showed the rule reached substantial protected political speech. The court concluded the provision was not substantially overbroad because its core applications to direct contributions remained valid.
Starlight Media argued that federal must-carry obligations for cable operators reached a substantial amount of protected editorial speech. The company presented evidence that the rules applied to many channels with little relation to the government's interest in preserving local broadcasting. The court upheld the rules after finding the overbreadth was not substantial relative to the statute's legitimate sweep.
The challenger must demonstrate that the law prohibits a substantial amount of protected speech when judged against its plainly legitimate sweep. Isolated hypothetical applications to protected speech are insufficient. The burden rests on the party attacking the statute.
Yes. If the statute is not substantially overbroad, it may be applied to unprotected conduct even though some hypothetical applications would reach protected speech. Facial invalidation is reserved for cases of substantial overbreadth.
A total ban on expressive activity in a traditional public forum is often facially overbroad because it suppresses far more protected speech than any legitimate regulatory goal requires. Courts apply the substantial-overbreadth test to determine whether the restriction can stand.
Yes. The government may argue that the statute's legitimate applications to unprotected conduct outweigh any marginal applications to protected speech. The challenger must still carry the burden of proving substantial overbreadth.
…applicable where the plaintiff attacks the facial validity of the statute on the ground that it is unconstitutionally vague or overbroad. Pp. 129-166. (b) The constitutional question presented by the challenge to the Texas abortion laws is one of great and immediate public importance, and the Court should not decline to…