he knew and he knew who they were that infiltrated the Gov't. He died from "hepatitis" cause unknown and none of the doctors had ever reported him in critical condition. He was 48. Guessing he was taken out IMO. Being from WI, we learned all about what happened during his era. The book The Crucible, even though it focused on the Salem witch trials, it was based on McCarthy's calling out the communist infiltration attemps.