In the case of Gerende v. Board of Supervisors of Elections of Baltimore, 1950, John W. Gerende challenged a Maryland law requiring candidates for public office to file an affidavit stating they were not affiliated with any group advocating violent overthrow of the government. The Supreme Court unanimously ruled in favor of Gerende, holding that the requirement was constitutional as it did not violate his First Amendment rights or due process under Fourteenth Amendment. The court stated that states have a right to ensure their officials are loyal and do not advocate violence against the government. This ruling upheld state laws designed to prevent subversive activities while also protecting individual's freedom from self-incrimination.

In the dissenting opinion for Gerende v. Board of Supervisors of Elections of Baltimore, Justice Felix Frankfurter argued that the majority's decision was a departure from established principles regarding freedom of speech and association. He contended that requiring an individual to swear allegiance to the government as a condition for running for public office violated their First Amendment rights. Furthermore, he believed it was not within the court's purview to interpret state laws in such a way as to avoid constitutional issues; rather, this responsibility lay with state courts or legislatures. In his view, by doing so, the Supreme Court had overstepped its bounds and infringed upon states' rights.