It’s about economic and strategic interests for the US. These have held true for decades, across all kinds of US admininstrations, and predates any real evangelical fervor. The US is guaranteed Israeli support, since Israel depends entirely on the US for its existence. In the spirit of “the purpose of a system is what it does”, I don’t believe that the US ever disapproves of the horrors Israel commits. The US could exercise power whenever it wants, but it rarely if ever does. Of course, Israel has its own interests, but they rarely contradict US goals in the region.