God has already answered that question: Gen 12:3 And I will bless them that bless thee, and curse him that curseth thee: and in thee shall all families of the earth be blessed. And in: Zec 2:8 he that toucheth you toucheth the apple of his eye. I am afraid Obama only has two choices, He can serve the Lord and side with Israel or he can be cursed and that goes for Hillary and McCain also.
But, if He (Obama) turns on Israel, the U.S. turns on Israel and that brings a curse on the entire nation.