Why did The New York Times appeal the Alabama libel verdict to the U.S. Supreme Court?

The New York Times appealed the Alabama libel verdict to the U.S. Supreme Court because it needed to find legal grounds to nullify Alabama’s strict libel laws, which at the time placed the burden of proof for factual accuracy entirely on the publisher.1

Under Alabama’s interpretation of common law, any factual error in a publication—even minor ones made in good faith—could result in a successful libel suit. Because the advertisement in question contained minor inaccuracies, the newspaper faced a $500,000 judgment that threatened to silence the press. To challenge this, the Times sought a ruling that would limit a state's power to award damages in libel actions brought by public officials against their critics, arguing that such state laws failed to uphold the freedom of speech and of the press guaranteed by the First and Fourteenth Amendments.1