Authors:

If anyone is crazy enough to want to kill a president of the United States, he can do it. All he must be prepared to do is give his life for the president's.

"With Kennedy". Book by Pierre Salinger, Chapter 1: Lancer to Wayside, page 1, 1966.
If anyone is crazy enough to want to kill a president of the United States, he can do it. All he must be prepared to do is give his life for the president's.