In the United States v. Myers case of 1943, the Supreme Court ruled on a matter concerning contempt of Congress. The defendants were convicted for refusing to answer questions during a congressional investigation into labor disputes and union activities, arguing that Congress had overstepped its bounds by delving into matters not within their legislative purview. However, the Supreme Court upheld their convictions in a unanimous decision. The court held that while there are limits to Congressional power, investigating potential legislation related to labor disputes was within those boundaries as it could potentially influence future lawmaking decisions. Therefore, refusal to cooperate with such an investigation constituted contempt of Congress.

In the dissenting opinion for United States v. Myers, Justice Frank Murphy argued that the majority's decision to uphold a conviction under the Espionage Act of 1917 was an infringement on First Amendment rights. He contended that this broad interpretation of espionage laws could potentially criminalize any criticism or negative commentary about government policies or actions during wartime, which is fundamentally against free speech principles. Furthermore, he expressed concern over how such interpretations could be used to suppress political dissent and control public opinion through fear of prosecution. In his view, while national security is important especially in times of war, it should not come at the expense of constitutional liberties like freedom of speech and expression.