Oppenheimer

The Biden Administration repealed the decision to revoke Oppenheimer’s security clearance in 2022, 55 years after his death. Oppenheimer was never found guilty of treason or of divulging secret information

“Oppenheimer, after using his family typewriter to correspond with local geologists, was invited to give a lecture on geology at the New York Mineralogical Club, who were unaware that he was only 12 at the time.”

Oppenheimer's security clearance was revoked during the McCarthy era due to suspicions about his loyalty and past associations. The FBI had a file on him due to his left-leaning sympathies and associations with known leftists.