Let’s see. Greenglass rolled, and didn’t Sobel take a plea? So why should Mrs. “We’re Totally Innocent” Rosenberg get the same deal? Oh yeah, her brother-in -law and her sister [I believe] flipped her in.
No, Sobell, didn’t roll or a take a plea. He was convicted with the Rosenbergs and served time in Alcatraz. He has only talked recently and is still alive as far as I know.
BTW—ladies and gentlemen, David Greenglass is alive as well and has admitted to saying incriminating things against his sister, Ethel Rosenberg, to protect his own wife who was much deeper involved in the conspiracy than Ethel ever was.