...
What does that prove?
Pretty much all the elected leaders above a certain level seem to need to make their pilgrimage and kiss the ring. Pictures exist of all recent presidents doing the same thing, and I cannot think of a one who didn't go to Israel and do undefined 'things' before they 'won' their primaries. Obama is a classic example of this.
It doesn't strictly speaking 'prove' anything, but it makes a hell of a strong statement about who runs the U.S.. What other country and religion to presidents act like this toward? Jews make up about 2% of the public. That's a lot of hassle (not to mention humiliation) for not a whole lot of votes, eh?
... Or it is something they do since the creation of the state of Israel and the enormous atrocities of WWII?
Occam's Razor and stuff...
Why didn't they go to China where 60M people died or Ukraine or Armenia?
Oh ya...'Marketing'. And that's a kind word for it when one takes a brief look at the arguments of the so-called 'revisionists'.
By the way, if they were so soul-crushed by the 'burnt offerings'...er...I mean the 'holocaust', why didn't they go dry-hump the Shekhinah years ago? Why wait until you need to 'win' a primary in a few months?