In the case of United Public Workers of America (C. I. O.) et al. v. Mitchell et al., 1946, the U.S Supreme Court upheld a provision in the Hatch Act that prohibited federal employees from taking an active part in political management or campaigns while on duty or for any political purpose at all if their salary is paid completely by loans or grants made by the United States government or its agencies. The court ruled that this restriction did not violate First Amendment rights to freedom of speech and assembly because it was necessary to maintain efficient public service free from partisan pressures and influences, thereby serving a compelling state interest which outweighed individual rights in this context.

In the dissenting opinion for United Public Workers of America v. Mitchell, Justice Wiley Rutledge argued that the Hatch Act, which prohibits federal employees from engaging in political activities, was unconstitutional as it violated First Amendment rights to free speech and assembly. He contended that while some restrictions on public servants' political activity might be necessary to prevent corruption or partisan influence in administration, a blanket prohibition was overly broad and infringed upon fundamental democratic freedoms. Furthermore, he criticized the majority's reliance on hypothetical scenarios of potential abuse rather than concrete evidence of harm caused by such activities. In his view, this approach inverted the presumption of innocence inherent in American law and placed an undue burden on individuals to prove their actions were harmless rather than requiring government to demonstrate actual harm done.