LogFAQs > #926109919

Several factors...

1) Israel was viewed as an important ally in the Cold War, as the USSR maintained friendly relations with Syria(which the current Russian Federation still maintains).

2) Racism. Ashkenazi Jews are (sort of) white, certainly "more white" than the Palestinians, Syrians, Egyptians, etc.

3) Israel has a democratic* government
*If you can call a system that systemically disenfranchises non-Jews "democratic"

4) Evangelical Christians in the U.S. believe the rebirth of the state of Israel and the construction of the Third Temple of Solomon on the Temple Mount(currently home to one of the holiest places in Islam, The Dome of the Rock, on the site where Muhammad is said to have ascended to Heaven) are necessary preconditions to Armageddon.

5) Israel is closely aligned with powerful lobbying groups in the U.S. such as AIPAC, which makes lavish campaign contributions to politicians who advance Israeli interests and holds prestigious conferences attended by top-level figures in both parties. To be fair, Israel is far from the only country to take advantage of the unique power money has over American politics.

6) The boiler-plate "Pro-Israel" position is not only the status-quo, default position, it is also a broadly bi-partisan one, an increasingly rare phenomena in American politics. Thus, most media outlets(many themselves influenced by pro-Israeli lobby) treat it as a sacred truth.