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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?
I'm guilty of doing this too. It's just something you do when you're at a Holy Site. I went to the Holy Sepulchre there too, did those respective rites, and tried to go to the Temple Mount, where they made it very difficult for non-Muslims that I didn't want to go.
Did you get some good 'thrusting of your penis and pelvis' going like a devoted Kabbalahist? Did the Shekhinah reach out and touch your junk?