Strauss is often most strongly remembered as the driving force in the month-long hearings, held in April and May 1954, before an AEC Personnel Security Board that resulted in Oppenheimer's security clearance being revoked. Strauss had access to the FBI's information on Oppenheimer, including his conversations with his lawyers, which was used to prepare counterarguments in advance. In the end, despite the support of numerous leading scientists and other prominent figures, Oppenheimer was stripped of his clearance, one day before it would have expired anyway, as Strauss had wanted. By all accounts, the hearings broke Oppenheimer's spirit and he was never the same person afterward.