The Alien Registration Act or Smith Act (18 USC 2385) of 1940 made it illegal for anyone in the United States to advocate overthrowing the government. It also required all non-citizen adult residents to register. The act aimed to identify members of the Communist Party of the United States of America.
... wider than the axis, and the gyroscope's evasive action towards the externally applied force will cause one end of the axis to push against the upper rim of the groove, ...