A provision of the Hatch Act made it illegal for the federal government to employ anyone who advocated the overthrow of the federal government .
Also in August 1939 , Congress passed the Hatch Act of 1939 , which restricted political campaign activities by federal employees .
A provision of the Hatch Act of 1939   made it illegal for the federal government to employ anyone who advocated the overthrow of the federal government .
Also in August 1939 , Congress passed the Hatch Act of 1939 , which restricted political campaign activities by federal employees .