You are assert very specific claims for which I can not provide facts for against. Claims that he was "all bullshit" sounds like wishful thinking to me or just repetition of the leftwing historical script. I guess I will have to look into McCarthy specifically for the next time this issue comes up. I note for completeness that the facts show that the Rosenburgs were guilty, Hollywood was (heh...and still is) filled with communist and communist sympathizing writers, Alger Hiss was a communist and a Soviet Agent, and that the State and Treasury department was riddled with communist and soviet agents (this was a McCarthy claim, correct?) from low to high levels. As afar as Oppenheimer, he had close relatives who where communists and his own bneliefs were not clear. It was only prudent that he be looked into. I am pretty sure that the Soviet Archives show that they attempted to recruit him (how, and through who?) but were unsuccessful. I don't believe he ever reported those recruitment attempts, so it was most likely by somebody close to him but as for who that detail will most likely remain lost to history.