How did president truman guard against communist spies in america?

a.
he set immigration quotas on all people from eastern europe.

b.
he made all communist-related activities illegal in the united states.

c.
he ordered the investigation of government workers to determine their loyalty.

d.
he set up a committee led by joseph mccarthy to investigate communist activities on american soil.

President Truman guarded citizens against communist spies in America by:

C.

He ordered the investigation of government workers to determine their loyalty.

This investigation was called the Loyalty Review Program.

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answer; protectionism fosters competition and keeps price regulated;