In Sullivan v. United States (1954), the Supreme Court ruled on a case involving the interpretation of an act of Congress that provided benefits for veterans with disabilities incurred during active military service. The petitioner, Sullivan, was seeking disability benefits for tuberculosis he claimed to have contracted while serving in World War II. However, his claim had been denied by the Veterans' Administration and lower courts because there was no evidence showing that his disease had been aggravated or accelerated due to military service as required by law at that time. The Supreme Court upheld these decisions stating that it is not within their power to rewrite acts of Congress based on sympathy towards those who served in war but did not meet specific legal criteria set forth in legislation regarding veteran's benefits. They concluded that although Mr. Sullivan may indeed be suffering from a serious illness related to his wartime experiences, without clear proof linking this directly to his military service under existing laws he could not receive compensation.

In the dissenting opinion for Sullivan v. United States, it was argued that the majority's decision to uphold Sullivan's conviction under a statute criminalizing false statements about Communist affiliations infringed upon his First Amendment rights. The dissenting justices contended that such statutes should be narrowly interpreted in order to avoid potential constitutional conflicts. They believed that punishing individuals for making false claims about their political associations could have chilling effects on free speech and political discourse, as people might fear reprisal or prosecution for expressing unpopular views or affiliating with controversial groups. Furthermore, they pointed out inconsistencies in how the law was applied; while some were prosecuted for denying communist ties others were not prosecuted despite openly admitting such connections. This selective enforcement of the law raised concerns about its potential misuse as a tool of political repression rather than a means of protecting national security.