The following Presidents hurt Israel during wars against Arab Nazi countries: Truman (1948), Eisenhower (1956), Johnson (1967), and Nixon (1973). Ford and Carter pressured Israel to give Sinai back to Muslim Nazi Egypt. Reagan didn't free Pollard but he pretty much left Israel alone on other issues. Bush, Sr. interfered in Israeli's election in 1992 ensuring Rabin won which led to Oslo. Bush, Jr. was against Israel but didn't interfere as much. Sharon did the Expulsion pretty much on his own. Regarding Clinton and Obama, I don't even have to comment since we know from current events that they are like Jimmy Carter, maybe even more clever versions of Carter, who only served one term.