06/22/1947
https://www.presidency.ucsb.edu...
"An officer or employee who is charged with being disloyal shall have a right to an administrative hearing before a loyalty board in the employing department or agency."
"The standard for the refusal of employment or the removal from employment in an executive department or agency on grounds relating to loyalty shall be that, on all the evidence, reasonable grounds exi..."
"There shall be a loyalty investigation of every person entering the civilian employment of any department or agency of the executive branch of the Federal Government."
"I am transmitting herewith for your consideration a suggested Joint Resolution providing for United States membership and participation in the World Health Organization."