Giancana got himself into an impossible situation. After he served a year in prison for contempt, he was released at the end of June 1966. U.S. Attorney Nicholas Katzenbach ordered Ed Hanrahan, et al, to stop any further subpoenas of Giancana. Hanrahan was prepared to hand Giancana another subpoena when he walked out of jail the last of June, 1966. I think we all know about Giancana's departure to Mexico and his unceremonious return. There's no doubt in my mind that pressure was on the Mexican gov't to "throw him out."

Fast forward to May 1975. Giancana had gall bladder surgery in Texas ( Dr. Michael DeBakey). Of course he didn't followed any of the hospital orders and left when he decided to leave. He returned to the hospital a little later in May with complications from his surgery. Sam Giancana was sick and very weak.

Giancana had testified four times before the Grand Jury and was scheduled for a final appearance when he was killed. Blasi appears to be the most likely suspect although there are other theories. It's not likely we will ever know who killed Giancana because all the people involved are dead. Accardo and Aiuppa had to be in on the order; and possibly Alex & Cerone. It was almost a given that Accardo & Santo Trafficante would be subpoenaed next. There were also several others who could have found themselves in front of a Congressional Committee. No doubt the Outfit leaders decided "enough is enough," so they eliminated the problem. About 13-14 months later the last threat to some of these upper echelon men, Johnny Roselli, would meet a similar fate. Oh, the Church Committee was questioning Roselli. The gov't announced there would be an investigation into the circumstances surrounding Roselli's death. No investigation was ever conducted.