He went on record with an affidavit about how he "murdered on Michael Corleone's orders." Yes, he retracted the affidavit under pressure of his brother's appearance, but damage had been done. As long as he lived, the government could have tried to use him in some way against Michael.
Ntra la porta tua lu sangu � sparsu, E nun me mporta si ce muoru accisu... E s'iddu muoru e vaju mparadisu Si nun ce truovo a ttia, mancu ce trasu.
