I think it's widely believed that if he left town and retired to Tucson his life would be spared. I think it was 1966 when his son was nearly killed in a shoot out and shortly there-after the clan moved to Tucson.

His Tucson property was a 3,000 cattle ranch but I bet he had plenty of money and maybe still some "tribute" being paid even after his exile.

Many people don't realize he was asked to testify in 1985 during the Commission Trial and instead served some time for contempt and was in jail