In Milkovich v. Lorain Journal Co. (1990),[REF] the Court ruled that the First Amendment offers no wholesale exception to defamation law for statements labeled "opinion", but instead that a statement must be provably false (falsifiable) before it can be the subject of a libel suit [REF].
The free speech and free press clauses have been interpreted as providing the same protection to speakers as to writers, except for wireless broadcasting which has been given less constitutional protection [REF].