No question FFC had JFK in mind even though the scene took place before JFK was elected. As others havbe pointed out history does prove that "you can kill anyone." But in this particular scene someoone says to kill Roth would be as tough as killing "the president."
"Io sono stanco, sono imbigliato, and I wan't everyone here to know, there ain't gonna be no trouble from me..Don Corleone..Cicc' a port!"
"I stood in the courtroom like a fool."
"I am Constanza: Lord of the idiots."
| 
