Religious extremism in the US has certainly helped in creating this unholy union. Much of the right wing Christian Church, as well as large segments of establishment Judaism have always considered a purified Israel as the will of God, and have preached such heavenly guidance in their religious services.
Billionaire Israeli/US citizens have done their part as well. Sheldon Adelson, gambling and casino mogul, was Trump's largest donor in the last election. He has also spent hundreds of millions on Congressional races, insuring that no candidate even whispers the word Palestine. The Zionists are so tightly in control that almost every member of Congress applauded Israel's most recent slaughter in Gaza, even after it was established that 550 Palestinian children had been killed.
The US Embassy is moving to Jerusalem. The Israeli Parliament has just passed a kosher version of Jim Crow, stripping many rights from non Jewish citizens. And 38 billion from US taxpayers will be making its way to Israel over the next several years.
There is even a law in Congress that would criminalize any boycott of Israeli apartheid. Hats off to state supported racism, the new American Dream.