Advisers and family members stressed over and over to Mr. Trump that he was selecting a running mate to unite the Republican Party, not a new best friend.

Newsmax: http://www.newsmax.com/Politics/Christie-silent-Trump-vice-president/2016/07/17/id/739082/#ixzz4EuueYGZ0
"For the good of the Democrat Party...to unite the Democtrat Party in Texas" was the reason JFK was lured to Dallas,TX to be assassinated