REPAIR

'How real was the threat of Communist spies within the USA?"
To the USA, the threat of communist spies is very real; and the USA took it very seriously. An example could be the loyalty oaths(1947), where hundreds of government workers lost their jobs for being “potentially” disloyal. Which sometimes was just been incriminate by their friends or people beside them.

Another example would be the Alger Hiss case(1950) and Rosenberg trail(1953). The reality of being betrayed by their own people raised the fears of the USA towards spies, also the threat of communist party became stronger. Due to the fears of the people of the US toward the communist spies, it is clearly shown that the USA really took the event seriously.