It's not widely known ... But the FBI questioned a French Assassin in Dallas, the day after the shooting.
What's your favorite JFK assassination theory?
That the "MOB" did it. 🙈🙉🙊
For an interesting take on the "conspiracy" read "The Third Bullet" by Stephen Hunter. Hunter has written a series of books about an old Marine sniper, and in this book he is called in to solve the mystery. The movie "Shooter" was based on one of his books.
The mob or Fidel Castro put a hit on JFK.